22 



BULLETIN 77, U. S. DEPABTMENT OF AGRICULTURE. 



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

 5-inch top by 6 feet long) — Continued. 









£§ 









Diameter. 



■33 



boO 



,£3*3 



bo'3 



| 







6 







a 

 .9 



•a 



o 









o> .2 



CB 













Species. 



■ 





B+>£ 



u 



4> 



fct 



•6 







boS 



bo GO 



9.2 





Remarks. 





c 



9 



3a 



o 



ft? 3 



ft 



00 



be 



a 



s 



9 



8 



o. 



d 



3 



•9 « 



3 ;§ 

 3 

 •a 

 o 







K 



5 



< 



5 



CQ 



GQ 



EH 



PQ 



S 



o 



s 



























1,000 























Lbs. 



Lbs. 



lbs. 









Per 



Lbs. per 

 ca. ft. 





Per 



Per 







per 



per 



per 









cent. 





cent. 



cent. 



In. 



In. 



sq. in. 



sg. in. 



sq. in. 





Bristle-cone 



1 



86.7 



30.78 



34 



22 



56 



4.25 



5.13 



1,474 



1,128 



390 



Crooked. 



pine. 



2 



109.0 



26.83 



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 



61 



4.46 



5.17 



1.760 



1,408 



574 



Do. 





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 



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 



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 



IS 





4.78 



5.16 



1,518 



1,119 



438 







8 1 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 



i,681 



1,412 



512 



Grain slightly spiral. 





10 ;116. 1 





13 



15 





4.62 



5.01 



1,512 



1,193 



416 



Do. 







96.1 



23.18 



14 

 32 



15 





4.44 



5.20 



1,475 



1,201 



443 











Western yel- 



11 1 81.1 



25.68 



14 





5.25 



6.15 



2,000 



1,570 



611 



Unusually knotty. 



low pine 



12 90.5 



23.22 



11 



14 





5.01 



5.73 



1,726 



1,320 



457 



Grain slightly spiral. 



(shipment 



13 1 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 



IS 



16 





5.35 



6.00 



1,940 



1,450 



561 





