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Reported Mountaineering Accidents, Miscellaneous Information (Numbers Refer to Number of Persons Involved), Table III

Miscellaneous Information Numbers Refer to Number of Persons Involved



1951–63

U.S.

1959–63

CAN.

U.S.

1964

CAN.



Terrain



Rock 

424

12

41

12



Snow

235

24

21

2



River

2

0

1

0



Unknown 

0

0

0

0



Ascent or Descent

(River crossing not included)

Ascent 

307

22

39

6



Descent 

307

13

22

8



Unknown 

46

1

2

0



Immediate Cause



Fall or slip on rock

241

7

22

4



Failure of piton

13

1

5

0



Falling rock or object

64

4

4

3



Failure of rappel

34

0

5

1



Slip on snow or ice

97

10

6

0



Fall into crevasse

14

4

4

0



Loss of control in voluntary glissade

33

2

3

1



Avalanche 

50

7

4

0



Lightning 

16

0

3

3



Stuck rope 

5

0

0

0



Skiing 

2

0

0

0



Faulty use of crampon

5

0

0

0



Fall in river

2

0

0

0



Exposure and/or exhaustion

41

1

0

0



Heat prostration 

2

0

0

0



Illness, medical 

5

0

0

1



Exceeding abilities

(inexperience) 

15

0

1

0



Miscellaneous (incl. frostbite) 

22

0

6

1



Contributory Causes



Climbing unroped

169

8

20

1



Climbing alone

48

3

2

1



Attempt to exceed abilities (inexperience) 

101

8

10

2



Darkness

8

0

2

0



Inadequate equipment 

35

0

1

0



Old rope

3

0

1

0



Piton failure

13

1

0

0



Bad weather

11

0

4

5



Exposure and/or exhaustion 

10

3

0

0





1951-63

U.S.

1959-63

CAN.

U.S.

1964

CAN.



Party separated 

12

0

0

0



Age of Individuals



Boys

6

0

0

0



Under 15 

22

0

2

1



15-20 years

219

7

20

5



“Young or college age” 

12

1

0

0



21-25 

140

3

21

1



26-30 

65

8

7

3



31-35 

49

1

4

O'



Over 35 

65

9

7

0



Unknown 

63

7

2

4



Unaffiliated with climbing groups



Unaffiliated

173

8

17

1



Not stated 

221

2

20

3



Member of mountaineering club

267

26

26

10



Estimate of experience



None or little

332

14

23

4



Moderate 

175

12

15

4



Experienced 

75

9

17

4



Unknown 

78

1

8

2



Month of year



January

14

1

2

0



February 

35

0

5

1



March

25

0

1

0



April 

38

1

2

0



May 

53

0

7

0



June 

71

2

7

0



July 

150

19

12

10



August 

120

12

10

2



September 

62

1

8

0



October 

29

0

6

0



November

35

0

1

0



December

16

0

2

0



Not specified 

2

0

0

1