O'Harra, Cleophas C.  1866-1935. <br/><br/>
The cement resources of the Black hills.  Including tests on cements made from Black hills material. 
By Cleophas C. O'Harra, PH. D., M. F. Coolbaugh, M. A., M. A. Ehle, jr., E. M., [and] Chas. H. Fulton, E. M. 
 - Rapid City, S.D.,  1908. 
 - 55 p.  plates (1 fold.) maps.  21 cm. 
 - Bulletin no. 8.  South Dakota school of mines.  Departments of geology, chemistry, mining and metallurgy .
 - South Dakota School of Mines and Technology.  Bulletin no. 8. .
<br/><br/>pt. 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. 
<br/><br/><label>LCCN: </label>gs 11000229  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cement--South Dakota.
<br/><br/><label>LC Class. No.: </label>TN24.S8  / A3 no. 8 
<br/><br/><label>Dewey Class. No.: </label>(265) S2b no.8