Numbur | 1980 NW Ridge

A Japan expedition to Numbur in 1980 via NW Ridge, led by Senkichi Kitaoka. Summit reached on 17th April 1980. 12 members recorded.

Expedition Details

Field	Value
ID	1903
Imported	2026-03-06 18:04:49.359634
Expedition ID	NUMB80101
Peak ID	NUMB
Year	1980
Season	1
Host Country	1
Route 1	NW Ridge
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Senkichi Kitaoka
Sponsor	Zao Alpine Club Numbur Expedition
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	-
Approach	Lukla
Basecamp Date	1980-04-03
Summit Date	1980-04-17
Summit Time	-
Summit Days	14
Total Days	16
Termination Date	1980-04-19
Termination Reason	10
Termination Notes	Abandoned at 6595m due to difficult knife-edge ridge
High Point (m)	6595
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	11
Summit Members	0
Member Deaths	0
Total Hired	4
Summit Hired	0
Hired Deaths	0
No Hired	False
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	-
Campsites	BC(03/04,4700m),C1(07/04,5150m),C2(10/04,6020m),C3(17/04,6595m),xxx(17/04,6595m)
Route Notes	Re Japan 1980 Spring attempt on Numbur from north; see my notes on Swiss 1981 autumn Numbur expedition's leader's (Bumann's) discussion of routes 8 Nov 81. Ban & Watatsuma - 28 April 80 No climbing above C3. Beyond C3 knife-edge ridge which very difficult; icefall and crevasse if traversed which very dangerous. This NW Ridge not possible and Sherpa sirdar said more difficult than Everest. C3 reached by Ban, Hirama, Izumikawa, Kayaba and Watatsuma = 5 members 18 April abandoned climb and all descended and arrived KTM 24 April No accident frostbite or illness. Don't know whether SW Ridge is possible. Expedition's camp as follows: BC - 3 April - 4700m C1 - 7 April - 5150m C2 -10 April - 6020m C3 -17 April - 6595m Takashi, et al - 26 March 80 Met LO and Sherpas of 1963 expedition and they say no success. Also no photo from summit, but members claim success. But Oishi met member in Japan and member could give no details so Oishi does not believe him. Route = NW Ridge (new route) Lukla 5 days to BC. NW Lumding Kharka at about 4000m near Tsho Og lake at east end of Lumding Glacier. Route up Glacier and thence of Numbur and up near point 6656m and finally up NW Ridge. Hope leave KTM 27 March and Lukla same day. Reach BC 1 or 2 April 4 camps above BC with highest at about 6500m Most difficult part between C3 and C4 (6000-6500m) and to summit; last part knife ridge. 37 days BC to top to BC; summit 1st week May 4 Sherpas above BC including sirdar Ang Phurba No oxygen for climbing
Accidents	-
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2447632
Year	1980
Summit Success	False
O2 Summary	None
Route (lowercase)	nw ridge

Members

Field	Value
ID	19509
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	03
Peak ID	NUMB
Year	1980
Season	1
First Name	Yukio
Last Name	Abe
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	33
Citizenship	Japan
Status	Climber
Residence	Shibata, Miyagi, Japan
Occupation	Architect
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	0
Summit Term	0
HCN	0
Checksum	2430011
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yukio abe
Year of Birth	1946
Year	1980
Age at Expedition	34
Role	Member

Field	Value
ID	19510
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	04
Peak ID	NUMB
Year	1980
Season	1
First Name	Hidehiko
Last Name	Ban
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Kasukabe, Saitama, Japan
Occupation	Roads engineer working for city government
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	0
Summit Term	0
HCN	0
Checksum	2432090
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hidehiko ban
Year of Birth	1951
Year	1980
Age at Expedition	29
Role	Member

Field	Value
ID	19511
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	02
Peak ID	NUMB
Year	1980
Season	1
First Name	Shoichi
Last Name	Ban
Sex	M
Age	0
Birth Date	-
Year of Birth	1947
Calculated Age	33
Citizenship	Japan
Status	Climbing Leader
Residence	Shibata, Miyagi, Japan
Occupation	Motorcar mechanic
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)	True
Personal High Point (m)	6595
Summit Date 1	1980-04-17
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
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	3
Summit Term	12
HCN	0
Checksum	2430318
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	shoichi ban
Year of Birth	1947
Year	1980
Age at Expedition	33
Role	Deputy

Field	Value
ID	19512
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	05
Peak ID	NUMB
Year	1980
Season	1
First Name	Ichio
Last Name	Hirama
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Iwanuma, Miyagi, Japan
Occupation	Teacher, motorcar driving
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)	True
Personal High Point (m)	6595
Summit Date 1	1980-04-17
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
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	3
Summit Term	12
HCN	0
Checksum	2432163
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ichio hirama
Year of Birth	1952
Year	1980
Age at Expedition	28
Role	Member

Field	Value
ID	19513
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	06
Peak ID	NUMB
Year	1980
Season	1
First Name	Muneo
Last Name	Izumikawa
Sex	M
Age	0
Birth Date	-
Year of Birth	1951
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Murata, Miyagi, Japan
Occupation	Rocket engineer employed by national government
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)	True
Personal High Point (m)	6595
Summit Date 1	1980-04-17
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
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	3
Summit Term	12
HCN	0
Checksum	2432029
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	muneo izumikawa
Year of Birth	1951
Year	1980
Age at Expedition	29
Role	Member

Field	Value
ID	19514
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	07
Peak ID	NUMB
Year	1980
Season	1
First Name	Minoru
Last Name	Kayaba
Sex	M
Age	0
Birth Date	-
Year of Birth	1934
Calculated Age	45
Citizenship	Japan
Status	Climber
Residence	Zao, Miyagi, Japan
Occupation	Ski instructor
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)	True
Personal High Point (m)	6595
Summit Date 1	1980-04-17
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
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	3
Summit Term	12
HCN	0
Checksum	2425644
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	minoru kayaba
Year of Birth	1934
Year	1980
Age at Expedition	46
Role	Member

Field	Value
ID	19515
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	01
Peak ID	NUMB
Year	1980
Season	1
First Name	Senkichi
Last Name	Kitaoka
Sex	M
Age	0
Birth Date	-
Year of Birth	1921
Calculated Age	59
Citizenship	Japan
Status	Leader
Residence	Zao, Miyagi, Japan
Occupation	Businessman (has several small business such as a taxi shop)
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	0
Summit Term	0
HCN	0
Checksum	2420856
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	senkichi kitaoka
Year of Birth	1921
Year	1980
Age at Expedition	59
Role	Leader

Field	Value
ID	19516
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	08
Peak ID	NUMB
Year	1980
Season	1
First Name	Hiroshi
Last Name	Komuro
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	27
Citizenship	Japan
Status	Climber
Residence	Shiroishi, Miyagi, Japan
Occupation	Salesman in sporting-goods shop
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	0
Summit Term	0
HCN	0
Checksum	2432472
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hiroshi komuro
Year of Birth	1953
Year	1980
Age at Expedition	27
Role	Member

Field	Value
ID	19517
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	09
Peak ID	NUMB
Year	1980
Season	1
First Name	Toyomi
Last Name	Oishi
Sex	M
Age	0
Birth Date	-
Year of Birth	1938
Calculated Age	41
Citizenship	Japan
Status	Climber
Residence	Omiya, Saitama, Japan
Occupation	Printing company president
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	0
Summit Term	0
HCN	0
Checksum	2427112
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	toyomi oishi
Year of Birth	1938
Year	1980
Age at Expedition	42
Role	Member

Field	Value
ID	19518
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	10
Peak ID	NUMB
Year	1980
Season	1
First Name	Kanda
Last Name	Takashi
Sex	M
Age	0
Birth Date	-
Year of Birth	1949
Calculated Age	30
Citizenship	Japan
Status	Climber
Residence	Kawasaki, Kanagawa, Japan
Occupation	Staff member, Tokyo trekking 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	0
Summit Term	0
HCN	0
Checksum	2431360
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kanda takashi
Year of Birth	1949
Year	1980
Age at Expedition	31
Role	Member

Field	Value
ID	19519
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	11
Peak ID	NUMB
Year	1980
Season	1
First Name	Hitoshi
Last Name	Watatsuma
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	31
Citizenship	Japan
Status	Climber
Residence	Shiroishi, Miyagi, Japan
Occupation	Car 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)	True
Personal High Point (m)	6595
Summit Date 1	1980-04-17
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
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	3
Summit Term	12
HCN	0
Checksum	2430787
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hitoshi watatsuma
Year of Birth	1948
Year	1980
Age at Expedition	32
Role	Member

Field	Value
ID	28121
Imported	2026-03-06 18:06:05.675609
Expedition ID	NUMB80101
Member ID	12
Peak ID	NUMB
Year	1980
Season	1
First Name	Ang Phurba
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Nepal
Status	Sirdar
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
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	0
Summit Term	0
HCN	0
Checksum	41
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ang phurba sherpa
Year of Birth	-
Year	1980
Age at Expedition	-
Role	Hired

12 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Yukio Abe	M	1946	Japan	Climber	Shibata, Miyagi, Japan	Architect	Details Other expeditions
Hidehiko Ban	M	1951	Japan	Climber	Kasukabe, Saitama, Japan	Roads engineer working for city government	Details Other expeditions
Shoichi Ban	M	1947	Japan	Climbing Leader	Shibata, Miyagi, Japan	Motorcar mechanic	Details Other expeditions
Ichio Hirama	M	1952	Japan	Climber	Iwanuma, Miyagi, Japan	Teacher, motorcar driving	Details Other expeditions
Muneo Izumikawa	M	1951	Japan	Climber	Murata, Miyagi, Japan	Rocket engineer employed by national government	Details Other expeditions
Minoru Kayaba	M	1934	Japan	Climber	Zao, Miyagi, Japan	Ski instructor	Details Other expeditions
Senkichi Kitaoka	M	1921	Japan	Leader	Zao, Miyagi, Japan	Businessman (has several small business such as a taxi shop)	Details Other expeditions
Hiroshi Komuro	M	1953	Japan	Climber	Shiroishi, Miyagi, Japan	Salesman in sporting-goods shop	Details Other expeditions
Toyomi Oishi	M	1938	Japan	Climber	Omiya, Saitama, Japan	Printing company president	Details Other expeditions
Kanda Takashi	M	1949	Japan	Climber	Kawasaki, Kanagawa, Japan	Staff member, Tokyo trekking company	Details Other expeditions
Hitoshi Watatsuma	M	1948	Japan	Climber	Shiroishi, Miyagi, Japan	Car salesman	Details Other expeditions
Ang Phurba Sherpa	M	-	Nepal	Sirdar	-	-	Details Other expeditions

References

Field	Value
ID	1819
Imported	2026-03-06 18:06:36.307770
Expedition ID	NUMB80101
Reference ID	01
Year	1980
Type	2
Journal	AAJ
Author	Cheney, Michael J.
Title	-
Publisher	-
Publication Date	1981
Language	-
Citation	55:256 (1981)
Yak 94	-
Notes	-

Field	Value
ID	12926
Imported	2026-03-06 18:06:36.307770
Expedition ID	NUMB80101
Reference ID	02
Year	1980
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12198125602/Asia-Nepal-Numbur-Attempt
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

2 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
NUMB80101	AAJ	Cheney, Michael J.	-	-	55:256 (1981)	-
NUMB80101	-	-	http://publications.americanalpineclub.org/articles/12198125602/Asia-Nepal-Numbur-Attempt	-	-	-