22 
BULLETIN 77, U. S. DEPARTMENT OF AGRICULTURE. 
Table 11. — Data on individual crushing tests of green round mine props (nominal size, 
5-inch top by 6 feet long) — Continued. 
•J 
c 
i 
Diameter. 
56 
fa 
1 
Species. 
o 
c 
g 
3 
a 33 
u 
<u 
ft 
ft, 
<D 
a 
1 
1 
£1 
2 <° 
toll 
Remarks. 
0) 
o 
£ 
C 
ft 
o 
Eh 
o 
2 -u> 
8* 
•a 
o 
1,000 
Lbs. 
Lbs. 
lbs. 
Per 
Z&s. per 
Ctt./f. 
Per 
Per 
per 
per 
per 
cent. 
cent. 
cent. 
In. 
In. 
sq. in. sq. in. 
sq.tn. 
Bristle-cone 
i 
86.7 
30.78 
34 
22 
56 
4.25 
5.13 
1, 474 1, 128 
390 
Crooked. 
pine. 
2 
109. 
26. S3 
32 
19 
56 
4.65 
5.50 
2.026 
1,590 
638 
3 
74.9 
30.86 
33 
18 
39 
4.80 
5.50 
1,364 
1,050 
453 
4 
106.1 
26.17 
41 
21 
36 
5.33 
6.40 
1,690 
1.435 
505 
5 
94.5 
29.57 
31 
22 
47 
4.52 
4.91 
1,480 
1,185 
525 
6 
56.1 
25.68 
31 
24 
3.98 
4.77 
1,400 
965 
446 
Crooked and unusu- 
ally knotty. 
7 
60.3 
28.95 
38 
16 
51 
4.46 
5.17 
1.760 
1,408 
574 
8 
85.1 
25.83 
43 
23 
46 
5.17 
6.05 
1,828 
1,430 
464 
Grain slightly spiral. 
9 
101.0 
25.72 | 32 
16 
43 
4.38 
5.16 
1,941 
1,528 
571 
10 
85.5 
26.39 
39 
16 
38 
4.30 
5.17 
1,610 
1,378 
516 
Av'ge. 
85.9 
27.68 
35 
20 
46 
4.58 
5.38 
1,657 
1,310 
508 
Western yel- 
1 1 91.8 
22.67 
14 
14 
4.25 
5.25 
1,355 
1,128 
428 
Do. 
low pine 
2 97. 7 
23.09 
16 
19 
4.25 
5.00 
1,630 
1.410 
516 
(shipment 
3 1 88.9 
22.52 
13 
14 
4.35 
5.10 
1,443 
1,211 
345 
A.) 
4 92.0 
23.55 
14 
14 
4.70 
5.40 
1,269 
1,038 
451 
Crooked. 
5 | 83.2 
22.48 
13 
15 
4.65 
5.60 
1,322 
1,060 
402 
Do. 
6 104.5 
22.33 
13 
12 
4.30 
5.13 
1,481 
1.172 
475 
Do. 
7 101.2 
22.71 
14 
16 
4.78 
5.16 
1,518 
1,119 
438 
8 
96.6 
23.62 
15 
15 
4.38 
5.41 
1,522 
1,262 
448 
9 
89.3 
25.70 
15 
13 
4.14 
4.94 
1,681 
1,412 
512 
Grain slightly spiral. 
10 
116.1 
13 
15 
4.62 
5.01 
1,512 
1,193 
416 
Do. 
Av'ge. 
96.1 
23.18 
14 
15 
4.44 
5.20 
1,475 
1,201 
443 
Western yel- 
11 i 81.1 
25.68 
32 
14 
5.25 
6.15 
2,000 
1,570 
611 
Unusually knotty. 
low pine 
12 1 90.5 
23.22 
11 
14 
5.01 
5.73 
1,726 
1,320 
457 
Grain slightly spiral. 
(shipment 
13 83.0 
24.80 
24 
20 
5.65 
6.13 
1,668 
1,275 
448 
Do. 
B.) 
14 113.2 
19 
23 
5.33 
6.17 
2,055 
1,435 
491 
15 
54.8 
25.92 
19 
17 
5.49 
6.05 
1.682 
1,352 
478 
Grain spiral, crooked. 
16 
63.5 
21.58 
16 
13 
5.41 
6.05 
1,670 
1,132 
532 
17 
78.8 
24.62 
16 
15 
5.33 
5.97 
2,410 
1,883 
702 
• 
18 
105.5 
24.78 
16 
12 
5.49 
5.81 
1,950 
1,269 
458 
19 
76.6 
26.20 
16 
14 
5.41 
6.05 
2,005 
1,392 
569 
20 
72.8 
26.28 
14 
13 

5.09 
5.89 
2,225 
1,865 
762 
Av'ge. 
82.0 
24.78 
18 
16 
5.35 
6.00 
1,940 
1,450 
561 
