01470cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040003900111043001200150050002200162082001900184100005700203245021500260260002900475300004200504490010900546505034300655650002600998700003901024700002301063700004001086810006601126gs 11000229 DLC20260227111311.0791116s1908    sdufb         000 0 eng c  ags 11000229   a(OCoLC)5701434  aU.S. Geol. surveycSdUdOCoLCdDLC  an-us-sd00aTN24.S8bA3 no. 8  a(265) S2b no.81 aO'Harra, Cleophas C.q(Cleophas Cisney),d1866-1935.14aThe cement resources of the Black hills.bIncluding tests on cements made from Black hills material.cBy Cleophas C. O'Harra, PH. D., M. F. Coolbaugh, M. A., M. A. Ehle, jr., E. M., [and] Chas. H. Fulton, E. M.  aRapid City, S.D.,c1908.  a55 p.bplates (1 fold.) maps.c21 cm.1 aBulletin no. 8.  South Dakota school of mines.  Departments of geology, chemistry, mining and metallurgy0 apt. I. The geology of the Black hills cement material, by C. C. O'Harra.--pt. II. Outline for the analysis of [1] cements and cement materials, by M. F. Coolbaugh.--pt. III. The preparation of the cement from the raw material for experimental purposes, by C. H. Fulton.--pt. IV. Experimental tests on Black hills cement, by Mark Ehle, jr. 0aCementzSouth Dakota.1 aCoolbaugh, Melville Fuller,d1877-1 aEhle, Mark A., jr.1 aFulton, Charles Herman,d1874-1944.1 aSouth Dakota School of Mines and Technology.vBulletin no. 8.