KOOKY MOUNTAIN MINE TIMBERS. 



21 



Table 11. — Data on individual crushing tests of green round mine props {nominal size, 



5-inch top by 6 feet long). 









eg 



& 



•e 





Diameter. 



A a 



"S3 

 o a 



fi 



J 

 3 





Species. 



CD 





3 t3 



.a 





•6 







s?a 



6003 



a J 



Is 



o t* 



Remarks. 





a 



>22 



i 



o 



OWU 



lis 



03 



60 



.a 



<D 



I 



S 1 



£ 



4^ - 



3 



1 -d 



or* 



O 







rt 



a 



<< 



« 



cq 



m 



Eh 



pq 



o 



o 



a 



























1,000 























Lbs. 



Lbs. 



lbs. 









Per 



Lbs. per 

 cu.ft. 





Per 



Per 







per 



per 



per 









c«nf. 





cent. 



cent. 



In. 



In. 



sq. in. 



sq. in. 



sq. in. 





Lodgepole 



l 



63.4 



26.23 



47 



26 



55 



5.17 



5.33 



1,885 



1,620 



587 



Grain slightly spiral. 



pine (ship- 



2 



85.6 



22.50 



47 



20 



73 



4.93 



5.57 



1,440 



1,049 



559 



Slightly crooked. 



ment A). 





























3 



64.0 



24.18 



40 



17 



41 



6.13 



6.37 



1,756 



1,355 



652 



Grain slightly spiral. 





4 



99.0 



22.23 



38 



16 



66 



5.65 



5.89 



1,808 



1,595 



343 







5 



48.3 



24.72 



28 



15 



28 



5.89 



6.13 



2,285 



1,981 



839 



5 knots, in failure 



plane. 

 Unusually knotty. 





6 



65.3 



22.79 



43 



16 



50 



6.13 



6.92 



1,835 



1,356 



582 





7 



102.0 



21.48 



56 



20 



54 



5.57 



6.13 



1,820 



1,396 



546 



Grain spiral. 





8 



83.7 



23.46 



32 



13 



62 



•5.81 



6.45 



1,745 



1,509 



560 







9 



67.4 



24.22 



32 



14 



65 



5.99 



6.53 



1,800 



1,420 



602 



Do. 





10 



78.4 



25.70 



36 



18 



46 



6.05 



6.45 



2,281 



1,670 



719 



Do. 







75.7 



23.75 



40 



18 



54 



5.73 



6.18 



1,865 



1,495 



599 













Lodgepole 



11 



61.8 



24.57 



41 



18 



50 



5.81 



6.13 



1,712 



1,130 



539 



Slightly crooked. 



pine (ship- 



12 



63.3 



23.08 



46 



22 



65 



6.05 



6.84 



1,490 



1,250 



387 





ment B). 



13 



58.7 



26.40 



45 



20 



25 



6.13 



6.53 



1,890 



1,559 



442 



Do. 





14 



81.0 



22.76 



48 



20 



29 



5.65 



6.45 



1,782 



1,354 



468 







15 



57.5 



19.45 



58 



13 



31 



5.25 



6.05 



1,630 



1,292 



598 



Grain spiral. 





16 



82.4 



22.86 



38 



15 



58 



5.73 



6.21 



1,705 



1,396 



621 



Do. 





17 



108.2 



24.38 



35 



12 



73 



4.85 



6.21 



1,169 



866 



439 







18 



61.8 



22.21 



44 



16 



53 



5.73 



6.37 



1,655 



1,318 



481 







19 



69.6 



20.56 



31 



12 



50 



6.76 



7.42 



1,438 



891 



526 



Slightly decayed. 





20 



63.7 



22.39 



48 



14 



55 



7.00 



7.56 



1,590 



1,351 



463 



Grain spiral. 







70.8 



22. 86 



43 



16 



4S 



5.90 



6.58 



1,605 



1,240 



496 











Alpine fir. . . 



1 



58.5 



19.44 



23 



12 





5.17 



6.05 



1,770 



1,334 



463 







2 



38.6 



24.07 



42 



15 





5.37 



5.73 



2,355 



1,944 



706 







3 



119.9 



20.03 



32 



18 





4.70 



5.38 



1, 712 



1,441 



502 







4 



115.3 





28 



22 





4.90 



5.58 



1,573 



1,378 



401 



Grain slightly spiral. 





5 



86.3 



22.41 



25 



20 





5.00 



5.50 



1,930 



1,630 



547 



Do. 





6 



78.1 



20.28 



13 



14 





4.77 



5.65 



1,870 



1,568 



519 







7 



123.6 



21.58 



23 



16 





4.85 



5.41 



1,978 



1,300 



633 







8 



63.1 



22.82 



20 



10 





4.70 



5.65 



2,007 



1,268 



486 







9 



135.7 



20.22 



29 



9 





4.62 



5.57 



2,082 



1,551 



614 









91.0 



21.36 



26 



15 





4.90 



5.65 



1,920 



1,490 



541 











Engelmann 



1 



52.4 



23.32 



32 



13 





5.65 



7.08 



2,040 



1,755 



642 





spruce. 



2 



68.8 



24.14 



46 



18 





6.20 



7.00 



2,000 



1,459 



686 







3 



53.1 



24.08 



38 



14 





5.25 



5.73 



1,875 



1,293 



578 







4 



75.4 



22.98 



25 



16 





4.38 



5.41 



1,511 



1,062 



358 







5 



89.1 



22.82 



25 



20 





4.46 



5.16 



1,515 



1,280 



459 







6 



73.2 



24.20 



19 



14 





4.14 



5.09 



1,590 



1,340 



592 



Crooked. 





7 



72.2 



22.96 



26 



15 





4.77 



5.41 



1,663 



1,230 



518 



Grain spiral. 

 Crooked. 





8 



53.8 



25.46 



28 



16 





4.62 



5.25 



1,536 



1,192 



422 





9 



55.8 



23.79 



42 



14 





4.93 



5.41 



1,888 



1,362 



538 







10 



53.3 



27.38 



46 



20 





4.38 



5.49 



2,115 



1,725 



608 



Grain slightly spiral. 





11 



38.1 



23.66 



24 



14 





5.65 



6.76 



1,518 



1,115 



416 



Crooked. 



Av'ge. 





62.3 



24.07 



32 



16 





4.95 



5.80 



1,750 



1,347 



529 





Douglas fir. . 



1 



89.1 



27.34 



20 



26 



68 



4.95 



5.45 



2,622 



2,180 



799 







2 



34.9 



25.22 



40 



24 



14 



5.33 



5.81 



2,870 



2,242 



596 







3 



91.6 



24.29 



23 



22 



52 



5.41 



6.05 



2,715 



2,438 



765 







4 



66.9 



25.33 



38 



14 



42 



5.60 



6.30 



2,200 



1,946 



718 



Grain spiral. 





5 



37.8 



28.57 



61 



24 



19 



4.93 



5.73 



2,358 



1,885 



676 



Do. 





6 



38.2 



27.08 



40 



28 



26 



6.84 



7.16 



2,664 



2,176 



856 







7 



42.9 



27.52 



45 



23 



31 



5.73 



6.45 



2,730 



2,330 



796 



Do. 





8 



34.8 



31.84 



26 



17 



38 



5.01 



5.57 



2,560 



2,030 



718 







9 



30.0 



30.10 



76 



25 



12 



5.89 



6.61 



2,545 



1,908 



789 



Do. 





10 



38.5 



27.77 



17 



28 



70 



5.09 



5.41 



2,560 



2,160 



865 



Do. 



Av'ge. 





50.5 



27.50 



39 



23 



37 



5.48 



6.05 



2,580 



2,130 



758 





