Sand Available for Filling Mine Workings in the Northern Anthracite Basin of Pennsylvania

Auteur : Robert M. Strong (Mechanical engineer), Charles Lathrop Parsons, Clarence Hall, George Arthur Burrell, George S. Pope, Harold Hayward Clark, Herbert Michael Wilson, Nelson Horatio Darton, Samuel B. Flagg, Frank Meyers Seibert, Lauson Stone, Spencer Pritchard Howell

Date de publication : 1912

Éditeur : U.S. Government Printing Office

Nombre de pages : 44