Cho Oyu | 2000 NW side

A USA expedition to Cho Oyu in 2000 via NW side, led by Dan Mazur. Summit reached on 3rd October 2000. 22 members recorded.

Expedition Details

Field	Value
ID	3708
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY00324
Peak ID	CHOY
Year	2000
Season	3
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	Dan Mazur
Sponsor	International Cho Oyu Expedition 2000
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	379,381
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Australia, Canada, China, France, UK
Approach	-
Basecamp Date	2000-09-11
Summit Date	2000-10-03
Summit Time	1200
Summit Days	22
Total Days	35
Termination Date	2000-10-16
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	21
Summit Members	3
Member Deaths	0
Total Hired	2
Summit Hired	1
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	True
O2 Unknown	False
Other Summits	-
Campsites	BC(11/09),ABC(12/09,5650m),C1(16/09,6400m),C2(23/09,7100m),C3(12/10,7500m),Smt(03,05/10)
Route Notes	O'Brien brothers went for summit on 7 Oct but on summit plateau turned left instead of right, came to realize they had made a mistake, retraced their steps to go around to the right but never reached highest point. Summiters on 3rd and 5th October reached highest point and saw Everest. On 12 Oct storm struck which in six hours destroyed tents at several camps including C3 where more members [Arnold, Hachett and Yang] were waiting to go to top, but had to abandon that plan and go down. Eight men left before climb ended: Larson and Khules on 13 Sept - for personal reasons, not above ABC. Keller on 24 Sept - expedition not operating to his satisfaction, went little above C1. Harlow on 24 Sept - he was not ready for such a climb, went little above ABC. Chen on 16 Sept - suffering from old neck injury, went to C2. Richardson on 3 Oct - sick (pulmonary edema), went to C2. Donovan on 4 Oct - no longer interested, went to C2 [dizzy at C2]. Boelter on 8 Oct - ready to go home.
Accidents	Richardson bad pulmonary edema at C2; Durga Tamang slight frostbitten toes
Achievement	-
Agency	Everest Parivar
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2457106
Year	2000
Summit Success	True
O2 Summary	None
Route (lowercase)	nw side

Members

Field	Value
ID	29039
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	03
Peak ID	CHOY
Year	2000
Season	3
First Name	Roblee Peter
Last Name	Allen
Sex	M
Age	0
Birth Date	-
Year of Birth	1940
Calculated Age	60
Citizenship	USA
Status	Exp Doctor
Residence	Elkgrove, California
Occupation	Physician
Leader	False
Deputy	False
Basecamp Only	True
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	17
HCN	0
Checksum	2427858
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	roblee peter allen
Year of Birth	1940
Year	2000
Age at Expedition	60
Role	BC Only

Field	Value
ID	29040
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	04
Peak ID	CHOY
Year	2000
Season	3
First Name	John
Last Name	Arnold
Sex	M
Age	0
Birth Date	-
Year of Birth	1960
Calculated Age	40
Citizenship	Canada
Status	Climber
Residence	Okotoks, Alberta
Occupation	Investor
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)	7900
Summit Date 1	2000-10-03
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	13
HCN	0
Checksum	2435247
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	john arnold
Year of Birth	1960
Year	2000
Age at Expedition	40
Role	Member

Field	Value
ID	29041
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	05
Peak ID	CHOY
Year	2000
Season	3
First Name	Robert
Last Name	Bettinelli
Sex	M
Age	0
Birth Date	-
Year of Birth	1956
Calculated Age	43
Citizenship	France
Status	Climber
Residence	Pontarlier, Doubs, France
Occupation	Plumber
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	-
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	2
Summit Term	9
HCN	0
Checksum	2433863
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	robert bettinelli
Year of Birth	1956
Year	2000
Age at Expedition	44
Role	Member

Field	Value
ID	29042
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	06
Peak ID	CHOY
Year	2000
Season	3
First Name	Timothy Morrison
Last Name	Boelter
Sex	M
Age	0
Birth Date	-
Year of Birth	1965
Calculated Age	35
Citizenship	USA
Status	Climber
Residence	Eagan, Minnesota
Occupation	Aircraft mechanic
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	2000-10-03
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1200
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	379
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	2437051
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	timothy morrison boelter
Year of Birth	1965
Year	2000
Age at Expedition	35
Role	Member

Field	Value
ID	29043
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	07
Peak ID	CHOY
Year	2000
Season	3
First Name	George
Last Name	Chen
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	29
Citizenship	China
Status	Climber
Residence	Beijing, China
Occupation	Retired business consultant
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	-
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	66
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	george chen
Year of Birth	-
Year	2000
Age at Expedition	-
Role	Member

Field	Value
ID	29044
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	08
Peak ID	CHOY
Year	2000
Season	3
First Name	Philip James (Phil)
Last Name	Crampton
Sex	M
Age	0
Birth Date	-
Year of Birth	1970
Calculated Age	30
Citizenship	UK
Status	Climber
Residence	New York, New York
Occupation	Bar owner
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)	7500
Summit Date 1	2000-10-07
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	8
HCN	0
Checksum	2438780
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	philip james (phil) crampton
Year of Birth	1970
Year	2000
Age at Expedition	30
Role	Member

Field	Value
ID	29045
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	09
Peak ID	CHOY
Year	2000
Season	3
First Name	Edward
Last Name	Donovan
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	46
Citizenship	USA
Status	Climber
Residence	Hollis, New Hampshire
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)	7100
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	6
HCN	0
Checksum	2432817
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	edward donovan
Year of Birth	1953
Year	2000
Age at Expedition	47
Role	Member

Field	Value
ID	29046
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	11
Peak ID	CHOY
Year	2000
Season	3
First Name	Ian
Last Name	Hatchett
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	47
Citizenship	Australia
Status	Climber
Residence	Crested Butte, Colorado
Occupation	Ski shop manager
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	2000-10-03
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	8
HCN	0
Checksum	2432719
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ian hatchett
Year of Birth	1953
Year	2000
Age at Expedition	47
Role	Member

Field	Value
ID	29047
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	10
Peak ID	CHOY
Year	2000
Season	3
First Name	Jeffrey
Last Name	Harlow
Sex	M
Age	0
Birth Date	-
Year of Birth	1974
Calculated Age	26
Citizenship	USA
Status	Climber
Residence	Derry, New Hampshire
Occupation	Bartender
Leader	False
Deputy	False
Basecamp Only	True
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)	5700
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	12
HCN	0
Checksum	2440189
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jeffrey harlow
Year of Birth	1974
Year	2000
Age at Expedition	26
Role	BC Only

Field	Value
ID	29048
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	12
Peak ID	CHOY
Year	2000
Season	3
First Name	Walter John
Last Name	Keller III
Sex	M
Age	0
Birth Date	-
Year of Birth	1968
Calculated Age	31
Citizenship	USA
Status	Climber
Residence	Bethel Park, Pennsylvania
Occupation	Physicist
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)	6500
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	18
HCN	0
Checksum	2438269
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	walter john keller iii
Year of Birth	1968
Year	2000
Age at Expedition	32
Role	Member

Field	Value
ID	29049
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	13
Peak ID	CHOY
Year	2000
Season	3
First Name	Clayton Arthur
Last Name	Kuhles
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	46
Citizenship	USA
Status	Climber
Residence	Prescott, Arizona
Occupation	Owner of trash-hauling business
Leader	False
Deputy	False
Basecamp Only	True
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	18
HCN	0
Checksum	2432856
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	clayton arthur kuhles
Year of Birth	1954
Year	2000
Age at Expedition	46
Role	BC Only

Field	Value
ID	29050
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	14
Peak ID	CHOY
Year	2000
Season	3
First Name	John Derek (J. D.)
Last Name	Larson
Sex	M
Age	0
Birth Date	-
Year of Birth	1966
Calculated Age	34
Citizenship	USA
Status	Climber
Residence	Truckee, California
Occupation	Member of Sierra College Faculty
Leader	False
Deputy	False
Basecamp Only	True
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	18
HCN	0
Checksum	2437332
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	john derek (j. d.) larson
Year of Birth	1966
Year	2000
Age at Expedition	34
Role	BC Only

Field	Value
ID	29051
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	17
Peak ID	CHOY
Year	2000
Season	3
First Name	David Le
Last Name	Pagne
Sex	M
Age	0
Birth Date	-
Year of Birth	1972
Calculated Age	27
Citizenship	France
Status	Climber
Residence	Lulea, Sweden
Occupation	PhD student
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	2000-10-05
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	6
HCN	0
Checksum	2439774
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	david le pagne
Year of Birth	1972
Year	2000
Age at Expedition	28
Role	Member

Field	Value
ID	29052
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	01
Peak ID	CHOY
Year	2000
Season	3
First Name	Daniel Lee (Dan)
Last Name	Mazur
Sex	M
Age	0
Birth Date	-
Year of Birth	1960
Calculated Age	39
Citizenship	USA
Status	Leader
Residence	Hamilton, Montana
Occupation	Housebuilder
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	2000-10-03
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1200
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	379
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	2435257
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	daniel lee (dan) mazur
Year of Birth	1960
Year	2000
Age at Expedition	40
Role	Leader

Field	Value
ID	29053
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	15
Peak ID	CHOY
Year	2000
Season	3
First Name	Christopher J. (Chris)
Last Name	O'Brien
Sex	M
Age	0
Birth Date	-
Year of Birth	1972
Calculated Age	27
Citizenship	USA
Status	Climber
Residence	Philadelphia, Pennsylvania
Occupation	Medical student
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)	8100
Summit Date 1	2000-10-07
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1600
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	18
HCN	0
Checksum	2439771
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	christopher j. (chris) o'brien
Year of Birth	1972
Year	2000
Age at Expedition	28
Role	Member

Field	Value
ID	29054
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	16
Peak ID	CHOY
Year	2000
Season	3
First Name	Michael Corey
Last Name	O'Brien
Sex	M
Age	0
Birth Date	-
Year of Birth	1965
Calculated Age	34
Citizenship	USA
Status	Climber
Residence	Chicago, Illinois
Occupation	Bartender
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)	8100
Summit Date 1	2000-10-07
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1600
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	(1965-2005) Died 2 May 2005 on Everest from fall into crevasse
Summit Bid	4
Summit Term	18
HCN	0
Checksum	2437219
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	michael corey o'brien
Year of Birth	1965
Year	2000
Age at Expedition	35
Role	Member

Field	Value
ID	29055
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	02
Peak ID	CHOY
Year	2000
Season	3
First Name	Jonathan Christian (Jon)
Last Name	Otto
Sex	M
Age	0
Birth Date	-
Year of Birth	1970
Calculated Age	30
Citizenship	USA
Status	Co-Leader
Residence	Bellingham, Washington
Occupation	Travel consultant
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)	7600
Summit Date 1	2000-10-07
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	9
HCN	0
Checksum	2438765
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jonathan christian (jon) otto
Year of Birth	1970
Year	2000
Age at Expedition	30
Role	Leader

Field	Value
ID	29056
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	18
Peak ID	CHOY
Year	2000
Season	3
First Name	Franck
Last Name	Pitula
Sex	M
Age	0
Birth Date	-
Year of Birth	1964
Calculated Age	35
Citizenship	France
Status	Climber
Residence	Paris, France
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	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	2000-10-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1615
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	381
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	2436741
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	franck pitula
Year of Birth	1964
Year	2000
Age at Expedition	36
Role	Member

Field	Value
ID	29057
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	19
Peak ID	CHOY
Year	2000
Season	3
First Name	Rod
Last Name	Richardson
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	48
Citizenship	USA
Status	Climber
Residence	Gardnerville, Nevada
Occupation	Alpine guide & juvenile counselor
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)	7200
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	1
Injury Height (m)	7200
Death Notes	Pulmonary edema
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	6
HCN	0
Checksum	2432196
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	rod richardson
Year of Birth	1952
Year	2000
Age at Expedition	48
Role	Member

Field	Value
ID	29058
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	20
Peak ID	CHOY
Year	2000
Season	3
First Name	David
Last Name	Roberts
Sex	M
Age	0
Birth Date	-
Year of Birth	1964
Calculated Age	36
Citizenship	UK
Status	Climber
Residence	Tangies, Helston, Cornwall, England
Occupation	Scuba-diving 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)	False
Personal High Point (m)	6650
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	2
Summit Term	6
HCN	0
Checksum	2436584
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	david roberts
Year of Birth	1964
Year	2000
Age at Expedition	36
Role	Member

Field	Value
ID	29059
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	21
Peak ID	CHOY
Year	2000
Season	3
First Name	Li-Cun
Last Name	Yang
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	28
Citizenship	China
Status	Climber
Residence	Urumqui, Xinjiang, China
Occupation	Railway freightcar inspector
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)	7500
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	3
Summit Term	3
HCN	0
Checksum	66
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	li-cun yang
Year of Birth	-
Year	2000
Age at Expedition	-
Role	Member

Field	Value
ID	29060
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY00324
Member ID	22
Peak ID	CHOY
Year	2000
Season	3
First Name	Durge Bahadur
Last Name	Tamang
Sex	M
Age	0
Birth Date	-
Year of Birth	1961
Calculated Age	39
Citizenship	Nepal
Status	H-A Worker
Residence	Deusa, Solukhumbu
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
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	2000-10-03
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1200
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	379
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	2435383
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	durge bahadur tamang
Year of Birth	1961
Year	2000
Age at Expedition	39
Role	Hired

22 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Roblee Peter Allen	M	1940	USA	Exp Doctor	Elkgrove, California	Physician	Details Other expeditions
John Arnold	M	1960	Canada	Climber	Okotoks, Alberta	Investor	Details Other expeditions
Robert Bettinelli	M	1956	France	Climber	Pontarlier, Doubs, France	Plumber	Details Other expeditions
Timothy Morrison Boelter	M	1965	USA	Climber	Eagan, Minnesota	Aircraft mechanic	Details Other expeditions
George Chen	M	-	China	Climber	Beijing, China	Retired business consultant	Details Other expeditions
Philip James (Phil) Crampton	M	1970	UK	Climber	New York, New York	Bar owner	Details Other expeditions
Edward Donovan	M	1953	USA	Climber	Hollis, New Hampshire	Physician	Details Other expeditions
Ian Hatchett	M	1953	Australia	Climber	Crested Butte, Colorado	Ski shop manager	Details Other expeditions
Jeffrey Harlow	M	1974	USA	Climber	Derry, New Hampshire	Bartender	Details Other expeditions
Walter John Keller III	M	1968	USA	Climber	Bethel Park, Pennsylvania	Physicist	Details Other expeditions
Clayton Arthur Kuhles	M	1954	USA	Climber	Prescott, Arizona	Owner of trash-hauling business	Details Other expeditions
John Derek (J. D.) Larson	M	1966	USA	Climber	Truckee, California	Member of Sierra College Faculty	Details Other expeditions
David Le Pagne	M	1972	France	Climber	Lulea, Sweden	PhD student	Details Other expeditions
Daniel Lee (Dan) Mazur	M	1960	USA	Leader	Hamilton, Montana	Housebuilder	Details Other expeditions
Christopher J. (Chris) O'Brien	M	1972	USA	Climber	Philadelphia, Pennsylvania	Medical student	Details Other expeditions
Michael Corey O'Brien	M	1965	USA	Climber	Chicago, Illinois	Bartender	Details Other expeditions
Jonathan Christian (Jon) Otto	M	1970	USA	Co-Leader	Bellingham, Washington	Travel consultant	Details Other expeditions
Franck Pitula	M	1964	France	Climber	Paris, France	Engineer	Details Other expeditions
Rod Richardson	M	1952	USA	Climber	Gardnerville, Nevada	Alpine guide & juvenile counselor	Details Other expeditions
David Roberts	M	1964	UK	Climber	Tangies, Helston, Cornwall, England	Scuba-diving instructor	Details Other expeditions
Li-Cun Yang	M	-	China	Climber	Urumqui, Xinjiang, China	Railway freightcar inspector	Details Other expeditions
Durge Bahadur Tamang	M	1961	Nepal	H-A Worker	Deusa, Solukhumbu	-	Details Other expeditions

References

Field	Value
ID	5523
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY00324
Reference ID	01
Year	2000
Type	3
Journal	HIGH
Author	-
Title	-
Publisher	-
Publication Date	2001
Language	-
Citation	226:63 (Sep 2001)
Yak 94	-
Notes	-

Field	Value
ID	8054
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY00324
Reference ID	02
Year	2000
Type	5
Journal	-
Author	-
Title	http://climb.mountainzone.com/2000/chooyu/html/index.html
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

Field	Value
ID	8055
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY00324
Reference ID	03
Year	2000
Type	5
Journal	-
Author	-
Title	http://www.summitclimb.com/cho_oyu_news_2000.htm
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

Field	Value
ID	8100
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY00324
Reference ID	04
Year	2000
Type	5
Journal	-
Author	-
Title	http://summitclimb.com/new/default.asp?linktype=r&mtype=smenu&vid=18&nid=31
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

4 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY00324	HIGH	-	-	-	226:63 (Sep 2001)	-
CHOY00324	-	-	http://climb.mountainzone.com/2000/chooyu/html/index.html	-	-	-
CHOY00324	-	-	http://www.summitclimb.com/cho_oyu_news_2000.htm	-	-	-
CHOY00324	-	-	http://summitclimb.com/new/default.asp?linktype=r&mtype=smenu&vid=18&nid=31	-	-	-