Cho Oyu | 1996 W Ridge/Face from N

A USA expedition to Cho Oyu in 1996 via W Ridge/Face from N, led by Ed Viesturs. Summit reached on 29th September 1996. 11 members recorded.

Expedition Details

Field	Value
ID	1961
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY96310
Peak ID	CHOY
Year	1996
Season	3
Host Country	2
Route 1	W Ridge/Face from N
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	Ed Viesturs
Sponsor	New Zealand Cho Oyu Expedition
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	225
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Australia, New Zealand, UK
Approach	KTM->Tingri->BC
Basecamp Date	1996-09-09
Summit Date	1996-09-29
Summit Time	0800
Summit Days	20
Total Days	25
Termination Date	1996-10-04
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	9
Summit Members	5
Member Deaths	0
Total Hired	2
Summit Hired	2
Hired Deaths	0
No Hired	False
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(09/09),ABC(11/09,5425),C1(16/09,6100m),C2(20/09,7100m),C3(27/09,7430m),Smt(29/09)
Route Notes	Viesturs, Boice, Buchan and 2 Sherpas on top at 8:00 am; French & Horner at 10:00 am.
Accidents	Kaplan pneumonia, Toraason flu; Dunjey psychosomatic chest infection
Achievement	-
Agency	Wilderness Experience
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2456087
Year	1996
Summit Success	True
O2 Summary	Used
Route (lowercase)	w ridge/face from n

Members

Field	Value
ID	5795
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	03
Peak ID	CHOY
Year	1996
Season	3
First Name	Robert M.
Last Name	Boice
Sex	M
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	38
Citizenship	USA
Status	Climber
Residence	San Francisco, California
Occupation	Investment banker
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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0800
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In & above C3 & from C2 to C3
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	5
Summit Term	1
HCN	0
Checksum	2434267
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	robert m. boice
Year of Birth	1958
Year	1996
Age at Expedition	38
Role	Member

Field	Value
ID	5796
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	04
Peak ID	CHOY
Year	1996
Season	3
First Name	Mathew
Last Name	Buchan
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	27
Citizenship	UK
Status	Climber
Residence	Bondi Beach, NSW, Australia
Occupation	Lighting technician
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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0800
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In & above C3 & from C2 to C3
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	5
Summit Term	1
HCN	0
Checksum	2438240
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	mathew buchan
Year of Birth	1969
Year	1996
Age at Expedition	27
Role	Member

Field	Value
ID	5797
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	05
Peak ID	CHOY
Year	1996
Season	3
First Name	Michael (Mike)
Last Name	Dunjey
Sex	M
Age	0
Birth Date	-
Year of Birth	1972
Calculated Age	23
Citizenship	Australia
Status	Climber
Residence	Perth, WA, Australia
Occupation	Civil 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	9
HCN	0
Checksum	2439589
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	michael (mike) dunjey
Year of Birth	1972
Year	1996
Age at Expedition	24
Role	Member

Field	Value
ID	5798
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	06
Peak ID	CHOY
Year	1996
Season	3
First Name	Susan O'Neill
Last Name	French
Sex	F
Age	0
Birth Date	-
Year of Birth	1960
Calculated Age	36
Citizenship	New Zealand
Status	Exp Doctor
Residence	Lyttelton, Christchurch, New Zealand
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	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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1000
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In & above C3 & from C2 to C3
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	5
Summit Term	1
HCN	0
Checksum	2435077
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	susan o'neill french
Year of Birth	1960
Year	1996
Age at Expedition	36
Role	Member

Field	Value
ID	5799
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	02
Peak ID	CHOY
Year	1996
Season	3
First Name	Skip
Last Name	Horner
Sex	M
Age	0
Birth Date	-
Year of Birth	1947
Calculated Age	49
Citizenship	USA
Status	Deputy Leader
Residence	Victor, Montana
Occupation	Alpine guide
Leader	False
Deputy	True
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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1000
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
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	5
Summit Term	1
HCN	0
Checksum	2430384
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	skip horner
Year of Birth	1947
Year	1996
Age at Expedition	49
Role	Deputy

Field	Value
ID	5800
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	07
Peak ID	CHOY
Year	1996
Season	3
First Name	Jordan
Last Name	Kaplan
Sex	M
Age	0
Birth Date	-
Year of Birth	1961
Calculated Age	35
Citizenship	USA
Status	Climber
Residence	Los Angeles, California
Occupation	Pension fund advisor & real estate 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	True
Injury Date	-
Injury Time	-
Injury Type	10
Injury Height (m)	0
Death Notes	C1 only due to pneumonia
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	9
HCN	0
Checksum	2435348
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jordan kaplan
Year of Birth	1961
Year	1996
Age at Expedition	35
Role	Member

Field	Value
ID	5801
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	08
Peak ID	CHOY
Year	1996
Season	3
First Name	Dennis J.
Last Name	Meister
Sex	M
Age	0
Birth Date	-
Year of Birth	1957
Calculated Age	38
Citizenship	USA
Status	Climber
Residence	Fremont, California
Occupation	Business executive
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)	7430
Summit Date 1	1996-09-27
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	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In C3 for 2 nights
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	C3 only
Necrology	-
Summit Bid	3
Summit Term	19
HCN	0
Checksum	2434150
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	dennis j. meister
Year of Birth	1957
Year	1996
Age at Expedition	39
Role	Member

Field	Value
ID	5802
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	09
Peak ID	CHOY
Year	1996
Season	3
First Name	John
Last Name	Toraason
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	50
Citizenship	USA
Status	Climber
Residence	Seattle, Washington
Occupation	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	9
HCN	0
Checksum	2429801
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	john toraason
Year of Birth	1946
Year	1996
Age at Expedition	50
Role	Member

Field	Value
ID	5803
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	01
Peak ID	CHOY
Year	1996
Season	3
First Name	Edmund Karl (Ed)
Last Name	Viesturs
Sex	M
Age	0
Birth Date	-
Year of Birth	1959
Calculated Age	37
Citizenship	USA
Status	Leader
Residence	Seattle, Washington
Occupation	Alpine guide
Leader	True
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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0800
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
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	5
Summit Term	1
HCN	0
Checksum	2434657
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	edmund karl (ed) viesturs
Year of Birth	1959
Year	1996
Age at Expedition	37
Role	Leader

Field	Value
ID	5804
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	10
Peak ID	CHOY
Year	1996
Season	3
First Name	Chuldim Dorje (Ang Dorje)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1964
Calculated Age	31
Citizenship	Nepal
Status	H-A Worker
Residence	Pangboche, 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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0800
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
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	2nd ascent of Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2436635
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	chuldim dorje (ang dorje) sherpa
Year of Birth	1964
Year	1996
Age at Expedition	32
Role	Hired

Field	Value
ID	5805
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY96310
Member ID	11
Peak ID	CHOY
Year	1996
Season	3
First Name	Chuldim (Chuldim Dorje)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1963
Calculated Age	32
Citizenship	Nepal
Status	H-A Worker
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	1996-09-29
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0800
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	225
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	5
Summit Term	1
HCN	0
Checksum	2436271
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	chuldim (chuldim dorje) sherpa
Year of Birth	1963
Year	1996
Age at Expedition	33
Role	Hired

11 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Robert M. Boice	M	1958	USA	Climber	San Francisco, California	Investment banker	Details Other expeditions
Mathew Buchan	M	1969	UK	Climber	Bondi Beach, NSW, Australia	Lighting technician	Details Other expeditions
Michael (Mike) Dunjey	M	1972	Australia	Climber	Perth, WA, Australia	Civil engineer	Details Other expeditions
Susan O'Neill French	F	1960	New Zealand	Exp Doctor	Lyttelton, Christchurch, New Zealand	Physician	Details Other expeditions
Skip Horner	M	1947	USA	Deputy Leader	Victor, Montana	Alpine guide	Details Other expeditions
Jordan Kaplan	M	1961	USA	Climber	Los Angeles, California	Pension fund advisor & real estate dealer	Details Other expeditions
Dennis J. Meister	M	1957	USA	Climber	Fremont, California	Business executive	Details Other expeditions
John Toraason	M	1946	USA	Climber	Seattle, Washington	Engineer	Details Other expeditions
Edmund Karl (Ed) Viesturs	M	1959	USA	Leader	Seattle, Washington	Alpine guide	Details Other expeditions
Chuldim Dorje (Ang Dorje) Sherpa	M	1964	Nepal	H-A Worker	Pangboche, Khumbu	-	Details Other expeditions
Chuldim (Chuldim Dorje) Sherpa	M	1963	Nepal	H-A Worker	Khumjung, Khumbu	-	Details Other expeditions

References

0 recorded references.