Cho Oyu | 1981 SE Face (to 5200m)

A Japan expedition to Cho Oyu in 1981 via SE Face (to 5200m), led by Takeshi Komatsu. Summit reached on 21st May 1981. 42 members recorded.

Expedition Details

Field	Value
ID	1848
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY81101
Peak ID	CHOY
Year	1981
Season	1
Host Country	1
Route 1	SE Face (to 5200m)
Route 2	S Ridge (to 7120m)
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Takeshi Komatsu
Sponsor	Nepal-Japan Joint Expedition to Mt. Cho Oyu
Success 1	False
Success 2	False
Success 3	False
Success 4	False
Ascent 1	-
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Nepal
Approach	Lukla->Gokyo->Lungsampa Glacier
Basecamp Date	1981-04-11
Summit Date	1981-05-21
Summit Time	-
Summit Days	40
Total Days	0
Termination Date	-
Termination Reason	4
Termination Notes	-
High Point (m)	7120
Traverse	False
Ski	False
Paraglide	False
Camps	6
Fixed Rope (m)	0
Total Members	42
Summit Members	0
Member Deaths	0
Total Hired	0
Summit Hired	0
Hired Deaths	0
No Hired	True
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	Climbed Lungsampa (LSAM)
Campsites	BC(11/04,5150m),C1A(14/04,5200m),C1B(23/04,5600m),C2(27/04,5950m),C3(04/05,6350m),C4(09/05,6450m),C5(17/05,6850m),C6(21/05,7120m),xxx(7120m)
Route Notes	C6 placed on 21 May at 7120m but not occupied; this expedition's highest point. Messner - 19 March 82 Japanese route in Spring 1981 = SE Face (mountain has two faces on Nepalese side: SW & SW Faces). Ohmri T. Komatsu, et al - 5 June 81 BC on 11 April on Lungsampa Glacier at 5150m. C1 at 5200m on 14 April for east route, at point just south of "L" in black on Schneider map of Lungsampa. Route changed because very dangerous: every day big avalanche of snow and ice; icefall was not so difficult but dangerous. Route changed to South Ridge; BC same but C1 changed. New C1 - 23 April at 5600m on South Ridge C2 - 27 Apr - 5950m C3 - 4 May - 6350m C4 - 9 May - 6450m C5 - 17 May - 6850m C6 - 21 May - 7120m (but not slept in at all) New C1 to C4 of point 6500m and atmost at this point Max altitude 7120m = C6 just above "U" west point 7110m 22 May tried to go up to C6, but bad weather prevented reaching it: every day it snowed. No one very reached C6 again. After 4 days waiting to be able to go up, decided to stop climb. C6 is still there. No accidents or frostbite. Doubt Austria-Germany scaled South Face because its very difficult and dangerous from daily avalanche. Same possibility via East Face especially in post-monsoon. No sign of previous climbers on South Face, a route east of Japanese route. South Ridge is possible if had many days good weather. Need at least C7 and maybe C8, very long route. Same difficult below 6500m and above 7200m (above 7200m difficult rock ridge). Shailendra Sharma, Tourism - 24 May 81 C5 22 May 7200m, weather bad on 23rd, no plans of summit. Otsu - 6 May 81 Cho Oyu expedition changed route because of too many avalanches; not so difficult. Shailendra Sharma - 4 May 81 Cho Oyu route changed: reason not known why changed; thinks because of difficulty. No camp information at all. Kamatsu, Yoshio & Ohmori - 23 Feb 81 Route = East Face = new route Approach via Gokyo Pokhari and Lungsampa Glacier. BC at about "p" of L. Glacier on Schneider Khumbu map at 5250m 5 camps above BC (see leaflet for altitudes). East Face is snow face. Icefall above BC to C2 (C2 = ABC above icefall). Most difficult area is C3 to C4 because of hanging glacier; "little danger" from hanging says deputy leader. Half members use no oxygen and others will use it because women and old who use it sleeping in C5 and to summit. 29 Japanese members. 12 Nepalese members including 3 Sherpas. No Sherpas above BC who are not members. 26 Japanese now in KTM and 3 arrive today. Leave KTM 27 or 28 Feb by air to Lukla. Arrive BC 20 March after acclimatization in route. Summit early May: 1-10 May So many members because want give training for other peaks including Lhotse and Everest in 3-4 years. Komatsu x 2 - 14 April 81 3 Japanese and 3 Nepalese members are now in KTM; go to Lukla tomorrow and take 15 days to reach BC (acclimatizing en route). Others in Gokyo; made BC on 11 April. Summit after 35-40 days. Total 11 Nepalese members. Yogendra Thapa - 14 April 81 Total 12 Nepalese members Cho Oyu 11 Nepalese members: Yogendra Thapa, joint Leader Mingma Tenzing Kamal Bhandari Gupta Bahadur Rana + new members not yet decided by the above. 11 total
Accidents	-
Achievement	-
Agency	-
Commercial Route	False
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2450372
Year	1981
Summit Success	False
O2 Summary	None
Route (lowercase)	se face (to 5200m)

Members

Field	Value
ID	4140
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	08
Peak ID	CHOY
Year	1981
Season	1
First Name	Yoshinaga
Last Name	Fujioka
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	27
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
Occupation	Construction worker
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432725
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yoshinaga fujioka
Year of Birth	1953
Year	1981
Age at Expedition	28
Role	Member

Field	Value
ID	4141
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	09
Peak ID	CHOY
Year	1981
Season	1
First Name	Kazuo
Last Name	Fusejima
Sex	M
Age	0
Birth Date	-
Year of Birth	1949
Calculated Age	31
Citizenship	Japan
Status	Climber
Residence	Kasukabe, Saitama, Japan
Occupation	Physician
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2431081
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kazuo fusejima
Year of Birth	1949
Year	1981
Age at Expedition	32
Role	Member

Field	Value
ID	4142
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	11
Peak ID	CHOY
Year	1981
Season	1
First Name	Hitotsu
Last Name	Hara
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	30
Citizenship	Japan
Status	Climber
Residence	Komagane, Nagano, Japan
Occupation	Watchmaker
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2431720
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hitotsu hara
Year of Birth	1951
Year	1981
Age at Expedition	30
Role	Member

Field	Value
ID	4143
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	13
Peak ID	CHOY
Year	1981
Season	1
First Name	Masahiko
Last Name	Komatsu
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	26
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
Occupation	Staff member, trading company
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2433019
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masahiko komatsu
Year of Birth	1954
Year	1981
Age at Expedition	27
Role	Member

Field	Value
ID	4144
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	01
Peak ID	CHOY
Year	1981
Season	1
First Name	Takeshi
Last Name	Komatsu
Sex	M
Age	0
Birth Date	-
Year of Birth	1937
Calculated Age	43
Citizenship	Japan
Status	Leader
Residence	Tokyo, Japan
Occupation	Director of printing company
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2426925
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takeshi komatsu
Year of Birth	1937
Year	1981
Age at Expedition	44
Role	Leader

Field	Value
ID	4145
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	14
Peak ID	CHOY
Year	1981
Season	1
First Name	Yutaka
Last Name	Kudo
Sex	M
Age	0
Birth Date	-
Year of Birth	1947
Calculated Age	33
Citizenship	Japan
Status	Climber
Residence	Inakadate, Minamitsugaru, Aomori, Japan
Occupation	Railway ticket collector
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430515
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yutaka kudo
Year of Birth	1947
Year	1981
Age at Expedition	34
Role	Member

Field	Value
ID	4146
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	15
Peak ID	CHOY
Year	1981
Season	1
First Name	Masafumi
Last Name	Kurita
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	29
Citizenship	Japan
Status	Climber
Residence	Sapporo, Hokkaido, Japan
Occupation	Draftsman
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432025
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masafumi kurita
Year of Birth	1951
Year	1981
Age at Expedition	30
Role	Member

Field	Value
ID	4147
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	16
Peak ID	CHOY
Year	1981
Season	1
First Name	Masayoshi
Last Name	Makanae
Sex	M
Age	0
Birth Date	-
Year of Birth	1941
Calculated Age	39
Citizenship	Japan
Status	Climber
Residence	Hachinohe, Aomori, Japan
Occupation	Agricultural engineer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2428336
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masayoshi makanae
Year of Birth	1941
Year	1981
Age at Expedition	40
Role	Member

Field	Value
ID	4148
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	17
Peak ID	CHOY
Year	1981
Season	1
First Name	Yorimoto
Last Name	Mikami
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	29
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
Occupation	Staff member, municipal office
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432018
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yorimoto mikami
Year of Birth	1951
Year	1981
Age at Expedition	30
Role	Member

Field	Value
ID	4149
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	18
Peak ID	CHOY
Year	1981
Season	1
First Name	Sachio
Last Name	Miyanaga
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	32
Citizenship	Japan
Status	Climber
Residence	Kyoto, Japan
Occupation	Interior decorator
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430964
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	sachio miyanaga
Year of Birth	1948
Year	1981
Age at Expedition	33
Role	Member

Field	Value
ID	4150
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	19
Peak ID	CHOY
Year	1981
Season	1
First Name	Hajime
Last Name	Muramatsu
Sex	M
Age	0
Birth Date	-
Year of Birth	1947
Calculated Age	33
Citizenship	Japan
Status	Climber
Residence	Shizuoka-shi, Shizuoka, Japan
Occupation	Worker in motorcar factory
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430435
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hajime muramatsu
Year of Birth	1947
Year	1981
Age at Expedition	34
Role	Member

Field	Value
ID	4151
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	20
Peak ID	CHOY
Year	1981
Season	1
First Name	Itsuo
Last Name	Muroi
Sex	M
Age	0
Birth Date	-
Year of Birth	1957
Calculated Age	24
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
Occupation	Sake wine dealer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2433943
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	itsuo muroi
Year of Birth	1957
Year	1981
Age at Expedition	24
Role	Member

Field	Value
ID	4152
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	22
Peak ID	CHOY
Year	1981
Season	1
First Name	Junji
Last Name	Naito
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	32
Citizenship	Japan
Status	Climber
Residence	Fukuoka-shi, Fukuoka, Japan
Occupation	Building designer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430939
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	junji naito
Year of Birth	1948
Year	1981
Age at Expedition	33
Role	Member

Field	Value
ID	4153
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	23
Peak ID	CHOY
Year	1981
Season	1
First Name	Takeshi
Last Name	Namatame
Sex	M
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	23
Citizenship	Japan
Status	Climber
Residence	Mitaka, Tokyo, Japan
Occupation	University student (veterinary medicine)
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2434341
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takeshi namatame
Year of Birth	1958
Year	1981
Age at Expedition	23
Role	Member

Field	Value
ID	4154
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	24
Peak ID	CHOY
Year	1981
Season	1
First Name	Hiroshi
Last Name	Oda
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	29
Citizenship	Japan
Status	Climber
Residence	Osaka, Japan
Occupation	Building designer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2431828
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hiroshi oda
Year of Birth	1951
Year	1981
Age at Expedition	30
Role	Member

Field	Value
ID	4155
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	25
Peak ID	CHOY
Year	1981
Season	1
First Name	Masaaki
Last Name	Ogata
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	27
Citizenship	Japan
Status	Climber
Residence	Matsumoto, Nagano, Japan
Occupation	Works in mountain lodge as jack of all trades
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432846
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masaaki ogata
Year of Birth	1954
Year	1981
Age at Expedition	27
Role	Member

Field	Value
ID	4156
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	04
Peak ID	CHOY
Year	1981
Season	1
First Name	Masahisa
Last Name	Ohno
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	28
Citizenship	Japan
Status	Climbing Leader
Residence	Kawasaki, Kanagawa, Japan
Occupation	Computer parts buyer
Leader	False
Deputy	True
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432261
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masahisa ohno
Year of Birth	1952
Year	1981
Age at Expedition	29
Role	Deputy

Field	Value
ID	4157
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	26
Peak ID	CHOY
Year	1981
Season	1
First Name	Shinji
Last Name	Okui
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	26
Citizenship	Japan
Status	Climber
Residence	Toyama-shi, Toyama, Japan
Occupation	Service engineer on typewriters and other business machines
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2433084
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	shinji okui
Year of Birth	1954
Year	1981
Age at Expedition	27
Role	Member

Field	Value
ID	4158
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	27
Peak ID	CHOY
Year	1981
Season	1
First Name	Emiko
Last Name	Okutani
Sex	F
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	26
Citizenship	Japan
Status	Climber
Residence	Funaba-shi, Chiba, Japan
Occupation	Nurse
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2433010
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	emiko okutani
Year of Birth	1954
Year	1981
Age at Expedition	27
Role	Member

Field	Value
ID	4159
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	28
Peak ID	CHOY
Year	1981
Season	1
First Name	Yoshihiko
Last Name	Omori
Sex	M
Age	0
Birth Date	-
Year of Birth	1945
Calculated Age	35
Citizenship	Japan
Status	Climber
Residence	Tosa, Kochi, Japan
Occupation	Assistant professor of physical education in university
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2429625
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yoshihiko omori
Year of Birth	1945
Year	1981
Age at Expedition	36
Role	Member

Field	Value
ID	4160
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	33
Peak ID	CHOY
Year	1981
Season	1
First Name	Kosaku
Last Name	Suda
Sex	M
Age	0
Birth Date	-
Year of Birth	1941
Calculated Age	39
Citizenship	Japan
Status	Climber
Residence	Niiza, Saitama, Japan
Occupation	Carpenter
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2428193
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kosaku suda
Year of Birth	1941
Year	1981
Age at Expedition	40
Role	Member

Field	Value
ID	4161
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	34
Peak ID	CHOY
Year	1981
Season	1
First Name	Tadashi
Last Name	Suzuki
Sex	M
Age	0
Birth Date	-
Year of Birth	1949
Calculated Age	31
Citizenship	Japan
Status	Climber
Residence	Obuse, Nagano, Japan
Occupation	Motorcar-repairs technician
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2431142
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tadashi suzuki
Year of Birth	1949
Year	1981
Age at Expedition	32
Role	Member

Field	Value
ID	4162
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	35
Peak ID	CHOY
Year	1981
Season	1
First Name	Tetsuji
Last Name	Suzuki
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	32
Citizenship	Japan
Status	Climber
Residence	Ryuyocho, Iwate, Shizuoka, Japan
Occupation	Steel worker
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430805
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tetsuji suzuki
Year of Birth	1948
Year	1981
Age at Expedition	33
Role	Member

Field	Value
ID	4163
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	36
Peak ID	CHOY
Year	1981
Season	1
First Name	Daisuke
Last Name	Taketsugu
Sex	M
Age	0
Birth Date	-
Year of Birth	1955
Calculated Age	25
Citizenship	Japan
Status	Climber
Residence	Kawasaki, Kanagawa, Japan
Occupation	Physical therapist
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2433379
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	daisuke taketsugu
Year of Birth	1955
Year	1981
Age at Expedition	26
Role	Member

Field	Value
ID	4164
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	39
Peak ID	CHOY
Year	1981
Season	1
First Name	Toshihito
Last Name	Yamada
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Kosugi, Toyama, Japan
Occupation	Insurance company clerk
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432275
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	toshihito yamada
Year of Birth	1952
Year	1981
Age at Expedition	29
Role	Member

Field	Value
ID	4165
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	40
Peak ID	CHOY
Year	1981
Season	1
First Name	Hiroshi
Last Name	Yamaguchi
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	29
Citizenship	Japan
Status	Climber
Residence	Tomobe, Ibaraki, Japan
Occupation	Stationery salesman
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432044
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hiroshi yamaguchi
Year of Birth	1951
Year	1981
Age at Expedition	30
Role	Member

Field	Value
ID	4166
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	41
Peak ID	CHOY
Year	1981
Season	1
First Name	Tateo
Last Name	Yamanaka
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	32
Citizenship	Japan
Status	Climber
Residence	Kawasaki, Kanagawa, Japan
Occupation	Director of construction company
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430811
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tateo yamanaka
Year of Birth	1948
Year	1981
Age at Expedition	33
Role	Member

Field	Value
ID	4167
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	42
Peak ID	CHOY
Year	1981
Season	1
First Name	Hideki
Last Name	Yatsuhashi
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Myoko-kogen, Niigata, Japan
Occupation	Sake wine dealer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2432394
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hideki yatsuhashi
Year of Birth	1952
Year	1981
Age at Expedition	29
Role	Member

Field	Value
ID	4168
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	06
Peak ID	CHOY
Year	1981
Season	1
First Name	Hiroshi
Last Name	Yoshio
Sex	M
Age	0
Birth Date	-
Year of Birth	1937
Calculated Age	43
Citizenship	Japan
Status	Deputy Leader
Residence	Funaba-shi, Chiba, Japan
Occupation	Staff member, fish market
Leader	False
Deputy	True
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2426703
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hiroshi yoshio
Year of Birth	1937
Year	1981
Age at Expedition	44
Role	Deputy

Field	Value
ID	4169
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	02
Peak ID	CHOY
Year	1981
Season	1
First Name	Yogendra Bahadur
Last Name	Thapa
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	32
Citizenship	Nepal
Status	Leader
Residence	Gandako Anchal, Kaski, Gandaki Zone
Occupation	Nepal Police
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	(1948-1984) Died 24 Oct 1984 on Everest from fall
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2430890
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yogendra bahadur thapa
Year of Birth	1948
Year	1981
Age at Expedition	33
Role	Leader

Field	Value
ID	4170
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	05
Peak ID	CHOY
Year	1981
Season	1
First Name	Gupta Bahadur
Last Name	Rana
Sex	M
Age	0
Birth Date	-
Year of Birth	1945
Calculated Age	35
Citizenship	Nepal
Status	Deputy Leader
Residence	Gundhar, Pokhara
Occupation	Government service
Leader	False
Deputy	True
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2429731
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	gupta bahadur rana
Year of Birth	1945
Year	1981
Age at Expedition	36
Role	Deputy

Field	Value
ID	4171
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	07
Peak ID	CHOY
Year	1981
Season	1
First Name	Kamal
Last Name	Bhandari
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	27
Citizenship	Nepal
Status	Climber
Residence	Anchal, Rupandehi, Lumbini Zone
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kamal bhandari
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4172
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	37
Peak ID	CHOY
Year	1981
Season	1
First Name	Gore
Last Name	Tamang
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	22
Citizenship	Nepal
Status	Climber
Residence	Suwarapani, Gorkha, Gandaki Zone
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	gore tamang
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4173
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	12
Peak ID	CHOY
Year	1981
Season	1
First Name	Gita Bahadur
Last Name	Joshi
Sex	M
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	22
Citizenship	Nepal
Status	Climber
Residence	Taluwa, Okhaldhunga
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2434384
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	gita bahadur joshi
Year of Birth	1958
Year	1981
Age at Expedition	23
Role	Member

Field	Value
ID	4174
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	30
Peak ID	CHOY
Year	1981
Season	1
First Name	Phul Bahadur
Last Name	Rai
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	26
Citizenship	Nepal
Status	Climber
Residence	Jubacheme, Solukhumbu
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	phul bahadur rai
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4175
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	31
Peak ID	CHOY
Year	1981
Season	1
First Name	Mingma Tenzing
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	30
Citizenship	Nepal
Status	Climber
Residence	Thami, Khumbu
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	True
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	mingma tenzing sherpa
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4176
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	32
Peak ID	CHOY
Year	1981
Season	1
First Name	Tendi
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	25
Citizenship	Nepal
Status	Climber
Residence	Solukhumbu
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	True
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tendi sherpa
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4177
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	29
Peak ID	CHOY
Year	1981
Season	1
First Name	Madan
Last Name	Rai
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	26
Citizenship	Nepal
Status	Climber
Residence	Diktel, Khotang
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	madan rai
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4178
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	21
Peak ID	CHOY
Year	1981
Season	1
First Name	Hum Bahadur
Last Name	Nagarkoti
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	28
Citizenship	Nepal
Status	Climber
Residence	Gorkha, Gandaki
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hum bahadur nagarkoti
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4179
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	38
Peak ID	CHOY
Year	1981
Season	1
First Name	Jit Bahadur
Last Name	Thapa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	22
Citizenship	Nepal
Status	Climber
Residence	Gorkha, Gandaki
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	3
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jit bahadur thapa
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	4180
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	10
Peak ID	CHOY
Year	1981
Season	1
First Name	Karna Bahadur
Last Name	Gurung
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	28
Citizenship	Nepal
Status	Climber
Residence	Gumda, Gorkha, Gandaki
Occupation	Government service
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	karna bahadur gurung
Year of Birth	-
Year	1981
Age at Expedition	-
Role	Member

Field	Value
ID	41675
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY81101
Member ID	03
Peak ID	CHOY
Year	1981
Season	1
First Name	Shigehiko
Last Name	Toyoda
Sex	M
Age	0
Birth Date	-
Year of Birth	1928
Calculated Age	53
Citizenship	Japan
Status	Leader
Residence	Tokyo, Japan
Occupation	Director of institute teaching mountaineering & skiing
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	3
HCN	0
Checksum	2423321
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	shigehiko toyoda
Year of Birth	1928
Year	1981
Age at Expedition	53
Role	Leader

42 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Yoshinaga Fujioka	M	1953	Japan	Climber	Tokyo, Japan	Construction worker	Details Other expeditions
Kazuo Fusejima	M	1949	Japan	Climber	Kasukabe, Saitama, Japan	Physician	Details Other expeditions
Hitotsu Hara	M	1951	Japan	Climber	Komagane, Nagano, Japan	Watchmaker	Details Other expeditions
Masahiko Komatsu	M	1954	Japan	Climber	Tokyo, Japan	Staff member, trading company	Details Other expeditions
Takeshi Komatsu	M	1937	Japan	Leader	Tokyo, Japan	Director of printing company	Details Other expeditions
Yutaka Kudo	M	1947	Japan	Climber	Inakadate, Minamitsugaru, Aomori, Japan	Railway ticket collector	Details Other expeditions
Masafumi Kurita	M	1951	Japan	Climber	Sapporo, Hokkaido, Japan	Draftsman	Details Other expeditions
Masayoshi Makanae	M	1941	Japan	Climber	Hachinohe, Aomori, Japan	Agricultural engineer	Details Other expeditions
Yorimoto Mikami	M	1951	Japan	Climber	Tokyo, Japan	Staff member, municipal office	Details Other expeditions
Sachio Miyanaga	M	1948	Japan	Climber	Kyoto, Japan	Interior decorator	Details Other expeditions
Hajime Muramatsu	M	1947	Japan	Climber	Shizuoka-shi, Shizuoka, Japan	Worker in motorcar factory	Details Other expeditions
Itsuo Muroi	M	1957	Japan	Climber	Tokyo, Japan	Sake wine dealer	Details Other expeditions
Junji Naito	M	1948	Japan	Climber	Fukuoka-shi, Fukuoka, Japan	Building designer	Details Other expeditions
Takeshi Namatame	M	1958	Japan	Climber	Mitaka, Tokyo, Japan	University student (veterinary medicine)	Details Other expeditions
Hiroshi Oda	M	1951	Japan	Climber	Osaka, Japan	Building designer	Details Other expeditions
Masaaki Ogata	M	1954	Japan	Climber	Matsumoto, Nagano, Japan	Works in mountain lodge as jack of all trades	Details Other expeditions
Masahisa Ohno	M	1952	Japan	Climbing Leader	Kawasaki, Kanagawa, Japan	Computer parts buyer	Details Other expeditions
Shinji Okui	M	1954	Japan	Climber	Toyama-shi, Toyama, Japan	Service engineer on typewriters and other business machines	Details Other expeditions
Emiko Okutani	F	1954	Japan	Climber	Funaba-shi, Chiba, Japan	Nurse	Details Other expeditions
Yoshihiko Omori	M	1945	Japan	Climber	Tosa, Kochi, Japan	Assistant professor of physical education in university	Details Other expeditions
Kosaku Suda	M	1941	Japan	Climber	Niiza, Saitama, Japan	Carpenter	Details Other expeditions
Tadashi Suzuki	M	1949	Japan	Climber	Obuse, Nagano, Japan	Motorcar-repairs technician	Details Other expeditions
Tetsuji Suzuki	M	1948	Japan	Climber	Ryuyocho, Iwate, Shizuoka, Japan	Steel worker	Details Other expeditions
Daisuke Taketsugu	M	1955	Japan	Climber	Kawasaki, Kanagawa, Japan	Physical therapist	Details Other expeditions
Toshihito Yamada	M	1952	Japan	Climber	Kosugi, Toyama, Japan	Insurance company clerk	Details Other expeditions
Hiroshi Yamaguchi	M	1951	Japan	Climber	Tomobe, Ibaraki, Japan	Stationery salesman	Details Other expeditions
Tateo Yamanaka	M	1948	Japan	Climber	Kawasaki, Kanagawa, Japan	Director of construction company	Details Other expeditions
Hideki Yatsuhashi	M	1952	Japan	Climber	Myoko-kogen, Niigata, Japan	Sake wine dealer	Details Other expeditions
Hiroshi Yoshio	M	1937	Japan	Deputy Leader	Funaba-shi, Chiba, Japan	Staff member, fish market	Details Other expeditions
Yogendra Bahadur Thapa	M	1948	Nepal	Leader	Gandako Anchal, Kaski, Gandaki Zone	Nepal Police	Details Other expeditions
Gupta Bahadur Rana	M	1945	Nepal	Deputy Leader	Gundhar, Pokhara	Government service	Details Other expeditions
Kamal Bhandari	M	-	Nepal	Climber	Anchal, Rupandehi, Lumbini Zone	Government service	Details Other expeditions
Gore Tamang	M	-	Nepal	Climber	Suwarapani, Gorkha, Gandaki Zone	Government service	Details Other expeditions
Gita Bahadur Joshi	M	1958	Nepal	Climber	Taluwa, Okhaldhunga	Government service	Details Other expeditions
Phul Bahadur Rai	M	-	Nepal	Climber	Jubacheme, Solukhumbu	Government service	Details Other expeditions
Mingma Tenzing Sherpa	M	-	Nepal	Climber	Thami, Khumbu	Government service	Details Other expeditions
Tendi Sherpa	M	-	Nepal	Climber	Solukhumbu	Government service	Details Other expeditions
Madan Rai	M	-	Nepal	Climber	Diktel, Khotang	Government service	Details Other expeditions
Hum Bahadur Nagarkoti	M	-	Nepal	Climber	Gorkha, Gandaki	Government service	Details Other expeditions
Jit Bahadur Thapa	M	-	Nepal	Climber	Gorkha, Gandaki	Government service	Details Other expeditions
Karna Bahadur Gurung	M	-	Nepal	Climber	Gumda, Gorkha, Gandaki	Government service	Details Other expeditions
Shigehiko Toyoda	M	1928	Japan	Leader	Tokyo, Japan	Director of institute teaching mountaineering & skiing	Details Other expeditions

References

Field	Value
ID	1889
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY81101
Reference ID	01
Year	1981
Type	2
Journal	AAJ
Author	Cheney, Michael J. & Hawley, Elizabeth
Title	-
Publisher	-
Publication Date	1982
Language	-
Citation	56:220 (1982)
Yak 94	-
Notes	-

Field	Value
ID	3936
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY81101
Reference ID	02
Year	1981
Type	3
Journal	MM
Author	-
Title	-
Publisher	-
Publication Date	1981
Language	-
Citation	80:12 (Jul 1981)
Yak 94	-
Notes	-

Field	Value
ID	6617
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY81101
Reference ID	03
Year	1981
Type	3
Journal	IWA
Author	-
Title	-
Publisher	-
Publication Date	1982
Language	Japanese w/English summary
Citation	88:187-188 (1982)
Yak 94	-
Notes	-

Field	Value
ID	6971
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY81101
Reference ID	04
Year	1981
Type	3
Journal	IWA
Author	-
Title	-
Publisher	-
Publication Date	1982
Language	Japanese
Citation	88:43-44 (1982)
Yak 94	-
Notes	-

Field	Value
ID	12812
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY81101
Reference ID	05
Year	1981
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12198222003/Asia-Nepal-Cho-Oyu-Attempt
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

5 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY81101	AAJ	Cheney, Michael J. & Hawley, Elizabeth	-	-	56:220 (1982)	-
CHOY81101	MM	-	-	-	80:12 (Jul 1981)	-
CHOY81101	IWA	-	-	-	88:187-188 (1982)	-
CHOY81101	IWA	-	-	-	88:43-44 (1982)	-
CHOY81101	-	-	http://publications.americanalpineclub.org/articles/12198222003/Asia-Nepal-Cho-Oyu-Attempt	-	-	-