Cho Oyu | 1958 W Ridge-W Face

A India expedition to Cho Oyu in 1958 via W Ridge-W Face, led by Keki F. Bunshah. Summit reached on 15th May 1958. 9 members recorded.

Expedition Details

Field	Value
ID	2678
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY58101
Peak ID	CHOY
Year	1958
Season	1
Host Country	1
Route 1	W Ridge-W Face
Route 2	-
Route 3	-
Route 4	-
Nationality	India
Leaders	Keki F. Bunshah
Sponsor	Indian Mountaineering Federation (IMF) Expedition
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	2nd
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	Khumbu Valley
Basecamp Date	1958-04-19
Summit Date	1958-05-15
Summit Time	1515
Summit Days	26
Total Days	28
Termination Date	1958-05-17
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	8
Summit Members	1
Member Deaths	1
Total Hired	7
Summit Hired	1
Hired Deaths	0
No Hired	False
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	True
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(19/04,5600m?),C1(21/04,6340m),C2(24/04,6850m),C3(27/04,7100m),Smt(15/05)
Route Notes	-
Accidents	Nandu Jayal died of pneumonia (or AMS) at BC
Achievement	-
Agency	-
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2441942
Year	1958
Summit Success	True
O2 Summary	Used
Route (lowercase)	w ridge-w face

Members

Field	Value
ID	22147
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	01
Peak ID	CHOY
Year	1958
Season	1
First Name	Keki F.
Last Name	Bunshah
Sex	M
Age	0
Birth Date	-
Year of Birth	1930
Calculated Age	28
Citizenship	India
Status	Leader
Residence	Bombay, India
Occupation	-
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)	7100
Summit Date 1	1958-04-27
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	1
Summit Term	15
HCN	0
Checksum	2423973
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	keki f. bunshah
Year of Birth	1930
Year	1958
Age at Expedition	28
Role	Leader

Field	Value
ID	22148
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	02
Peak ID	CHOY
Year	1958
Season	1
First Name	Sonam Gyatso
Last Name	-
Sex	M
Age	0
Birth Date	-
Year of Birth	1923
Calculated Age	35
Citizenship	India
Status	Climber
Residence	Sikkim, India
Occupation	Civil servant
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1958-05-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1515
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	2
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	DOB also given as Nov 1922
Necrology	(1923-1968) Died 22 April 1968 in Delhi
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2421426
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	sonam gyatso
Year of Birth	1923
Year	1958
Age at Expedition	35
Role	Member

Field	Value
ID	22149
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	09
Peak ID	CHOY
Year	1958
Season	1
First Name	Pasang Dawa
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1912
Calculated Age	45
Citizenship	Nepal
Status	Sirdar
Residence	Khumjung, Khumbu
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1958-05-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1515
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	2
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	HC #139; aka Pasang Sherpa (originally from Khumjung)
Necrology	(1912-1982) Died in December 1982 in India
Summit Bid	5
Summit Term	1
HCN	139
Checksum	-2074
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	pasang dawa sherpa
Year of Birth	1912
Year	1958
Age at Expedition	46
Role	Hired

Field	Value
ID	23486
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	06
Peak ID	CHOY
Year	1958
Season	1
First Name	Narendra Dhar (Nandu)
Last Name	Jayal
Sex	M
Age	0
Birth Date	-
Year of Birth	1926
Calculated Age	31
Citizenship	India
Status	Climber
Residence	Darjeeling, India
Occupation	Principal of Himalayan Mountaineering Institute
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	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	True
O2 Notes	-
Death	True
Death Date	1958-04-28
Death Time	0400
Death Type	1
Death Height (m)	5600
Death Class	2
AMS	True
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	Died of AMS (pulmonary edema) at BC
Member Notes	-
Necrology	(1926-1958) Died 28 Apr 1958 on Cho Oyu from AMS
Summit Bid	1
Summit Term	5
HCN	0
Checksum	-2088
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	narendra dhar (nandu) jayal
Year of Birth	1926
Year	1958
Age at Expedition	32
Role	Member

Field	Value
ID	26328
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	04
Peak ID	CHOY
Year	1958
Season	1
First Name	John Desmond (Jack)
Last Name	Dias
Sex	M
Age	0
Birth Date	-
Year of Birth	1928
Calculated Age	29
Citizenship	India
Status	Climber
Residence	-
Occupation	-
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)	7600
Summit Date 1	1958-05-15
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	4
Summit Term	7
HCN	0
Checksum	-2066
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	john desmond (jack) dias
Year of Birth	1928
Year	1958
Age at Expedition	30
Role	Member

Field	Value
ID	26329
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	08
Peak ID	CHOY
Year	1958
Season	1
First Name	Jagjit
Last Name	Singh
Sex	M
Age	0
Birth Date	-
Year of Birth	1937
Calculated Age	21
Citizenship	India
Status	Climber
Residence	-
Occupation	-
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)	7100
Summit Date 1	1958-04-27
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	(1937-1989) Died 29 Nov 1989
Summit Bid	1
Summit Term	15
HCN	0
Checksum	2426479
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jagjit singh
Year of Birth	1937
Year	1958
Age at Expedition	21
Role	Member

Field	Value
ID	26330
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	03
Peak ID	CHOY
Year	1958
Season	1
First Name	R. M.
Last Name	Boal
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	India
Status	Climber
Residence	-
Occupation	-
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	-138
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	r. m. boal
Year of Birth	-
Year	1958
Age at Expedition	-
Role	Member

Field	Value
ID	26331
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	07
Peak ID	CHOY
Year	1958
Season	1
First Name	R. S.
Last Name	Rao
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	India
Status	Scientist
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	True
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	17
HCN	0
Checksum	-138
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	r. s. rao
Year of Birth	-
Year	1958
Age at Expedition	-
Role	Member

Field	Value
ID	26332
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY58101
Member ID	05
Peak ID	CHOY
Year	1958
Season	1
First Name	A.
Last Name	Dutta
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	India
Status	Scientist
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	True
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	17
HCN	0
Checksum	-138
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	a. dutta
Year of Birth	-
Year	1958
Age at Expedition	-
Role	Member

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Keki F. Bunshah	M	1930	India	Leader	Bombay, India	-	Details Other expeditions
Sonam Gyatso	M	1923	India	Climber	Sikkim, India	Civil servant	Details Other expeditions
Pasang Dawa Sherpa	M	1912	Nepal	Sirdar	Khumjung, Khumbu	-	Details Other expeditions
Narendra Dhar (Nandu) Jayal	M	1926	India	Climber	Darjeeling, India	Principal of Himalayan Mountaineering Institute	Details Other expeditions
John Desmond (Jack) Dias	M	1928	India	Climber	-	-	Details Other expeditions
Jagjit Singh	M	1937	India	Climber	-	-	Details Other expeditions
R. M. Boal	M	-	India	Climber	-	-	Details Other expeditions
R. S. Rao	M	-	India	Scientist	-	-	Details Other expeditions
A. Dutta	M	-	India	Scientist	-	-	Details Other expeditions

References

Field	Value
ID	971
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	01
Year	1958
Type	2
Journal	AAJ
Author	-
Title	-
Publisher	-
Publication Date	1959
Language	-
Citation	33:323-324 (1959)
Yak 94	-
Notes	-

Field	Value
ID	975
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	02
Year	1958
Type	2
Journal	HJ
Author	-
Title	-
Publisher	-
Publication Date	1958
Language	-
Citation	21:164 (1958)
Yak 94	-
Notes	-

Field	Value
ID	3789
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	03
Year	1958
Type	3
Journal	MM
Author	Dyhrenfurth, G. O. & Dyhrenfurth, Norman
Title	Cho Oyu
Publisher	-
Publication Date	1978
Language	-
Citation	60:40-42 (Mar 1978)
Yak 94	-
Notes	-

Field	Value
ID	5638
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	04
Year	1958
Type	2
Journal	IM
Author	Singh, Jagjit
Title	35th Anniversary of the First IMF Expedition
Publisher	-
Publication Date	1993
Language	-
Citation	29:56-66 (1993)
Yak 94	-
Notes	-

Field	Value
ID	6461
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	05
Year	1958
Type	2
Journal	HMJ
Author	Singh, Jagit
Title	Tragedy Mars Cho Oyu Success
Publisher	-
Publication Date	1968
Language	-
Citation	4-2:76-91 (Dec 1968)
Yak 94	-
Notes	-

Field	Value
ID	7154
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	06
Year	1958
Type	1
Journal	-
Author	Mullik, B. N.
Title	The Sky Was His Limit, The Life and Climbs of Sonam Gyatso
Publisher	Palit & Dutt, Dehra Dun, India
Publication Date	1970
Language	-
Citation	-
Yak 94	M554
Notes	-

Field	Value
ID	8275
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	07
Year	1958
Type	2
Journal	IM
Author	Singh, Jagjit
Title	Cho Oyu, The Turquiose Goddess
Publisher	-
Publication Date	2008
Language	-
Citation	44:40-47 (2008)
Yak 94	-
Notes	-

Field	Value
ID	13320
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	08
Year	1958
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12195932304/Himalaya-Nepal-Cho-Oyu
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

Field	Value
ID	15973
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY58101
Reference ID	09
Year	1958
Type	2
Journal	IM
Author	Singh, Jagjit
Title	Cho Oyu
Publisher	-
Publication Date	1983
Language	-
Citation	12:39-42 (1983)
Yak 94	-
Notes	-

9 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY58101	AAJ	-	-	-	33:323-324 (1959)	-
CHOY58101	HJ	-	-	-	21:164 (1958)	-
CHOY58101	MM	Dyhrenfurth, G. O. & Dyhrenfurth, Norman	Cho Oyu	-	60:40-42 (Mar 1978)	-
CHOY58101	IM	Singh, Jagjit	35th Anniversary of the First IMF Expedition	-	29:56-66 (1993)	-
CHOY58101	HMJ	Singh, Jagit	Tragedy Mars Cho Oyu Success	-	4-2:76-91 (Dec 1968)	-
CHOY58101	-	Mullik, B. N.	The Sky Was His Limit, The Life and Climbs of Sonam Gyatso	Palit & Dutt, Dehra Dun, India	-	M554
CHOY58101	IM	Singh, Jagjit	Cho Oyu, The Turquiose Goddess	-	44:40-47 (2008)	-
CHOY58101	-	-	http://publications.americanalpineclub.org/articles/12195932304/Himalaya-Nepal-Cho-Oyu	-	-	-
CHOY58101	IM	Singh, Jagjit	Cho Oyu	-	12:39-42 (1983)	-