﻿PHYSICAL, TESTS OF ROAD-BUILDING ROCK. 49 



Table 2. — Results of compression tests of rock, made prior to Jan. 1, 1916 — Continued. 

 NORTH CAROLINA— Continued. 



Locality. 



County. 



Name. 



Crushing 



strength, 



pounds per 



square inch. 



"Wilson 



Stacey 



Sansbury 



Bostic 



Mount Airy... 



do 



do 



do 



Granita (near) . 



Wise 



do 



0) 



Wilson 



Rockingham . 



Rowan 



Rutherford... 



Surry 



do 



do 



do 



Wake 



Warren 



do... 



Yancey 



Granite 



Granite gneiss. . 



Granite 



Biotite gneiss. . 



Granite 



do 



do 



do 



Biotite granite. 



Granite.. .*. 



do 



Quartzite 



16, 070 

 23, 220 

 33, 750 

 16,100 

 18,"400 

 15,200 

 5,100 

 16,440 

 14,160 

 18,240 

 18, 560 

 12,900 



OHIO. 



Osborne Clark 



Springfield do 



Cleveland Cuyahoga. 



do do 



do do 



do do 



do do 



Sandusky Erie.. 



do do 



Castalia do. . . . 



do do 



Marble Cliff Franklin.. 



do do 



Columbus do. . . . 



Patterson Hardin — 



Dunkirk do 



Hillsboro Highland. 



Clarksfield Huron 



Big Springs Logan 



Vulcan Lucas 



Holland I do 



Toledo, 10 miles west of. j do. . .. 



White Rock Ottawa... 



Bloomville Seneca 



Middleport | Van Wert. 



Dolomitic limestone 



Dolomite 



Granite 



....do 



do 



do 



do 



Limestone 



do 



Dolomitic limestone 



Limestone 



do 



do 



Ferrugineous sandstone. 



Dolomite 



do 



Cherty limestone 



Calcareous sandstone 



Argillaceous limestone. . 



Siliceous limestone 



Argillaceous limestone. . 



Dolomite 



do 



Limestone 



Dolomite 



8,690 

 18, 900 

 31, 790 

 27, 900 

 24,790 

 26,990 

 24,900 

 19,400 

 21,850 

 IS, 530 



20, 810 

 16, 750 

 12, 350 



21, 800 

 11,360 

 26,200 

 15, 590 



9,490 

 16, 3S0 

 25,4S0 

 19, 430 

 11,600 

 16, 620 

 20, 250 

 25,200 



OKLAHOMA. 



PENNSYLVANIA. 



Hyndman 



do 



Birdsboro 



Juniata 



( l ) 



Hazard 



C 1 ) 



(') 



(') 



Salona 



0) 



(') 



(') 



(') 



(') 



Indian Creek Station. 

 Bidwell 



Bedford. . 



do... 



Berks 



Blair 



do... 



Carbon. . . 

 Chester . . 



do... 



do... 



Clinton . . 

 Dauphin. 



do... 



do... 



do... 



Elk 



Fayette.. 

 do... 



Impure limestone 



Siliceous limestone 



Altered diabase 



Argillaceous limestone . 



do 



Blast-furnace slag 



Pyroxene quartzite 



Mica schist 



do 



Argillaceous limestone . 



Siliceous limestone 



Limestone 



do 



Siliceous dolomite 



Ferruginous sandstone . 

 Calcareous sandstone. . . 

 Limestone 



24, 150 

 21, S60 

 39, 215 

 15,480 

 20, 880 



9,000 

 31,800 

 23,500 

 23,900 

 18, 710 

 26,500 



8,510 

 19^250 



9,640 

 14, 150 

 37,740 

 13, 450 



Exact locality not known. 



