Investigation of Longwall Gateroad Roof Support Characteristics at Powhatan No. 4 Mine

Auteur : Alexander May, Bill M. Stewart, Charles D. Litton, David C. Oyler, Donald A. Stanley, Eugene D. Calvert, Gregory J. Chekan, Jalna R. Zatko, John E. Pahlman, Judith A. Eisele, K. O. Bennington, Laurence L. Oden, R. H. Lien, Rolland Laws Blake, Sathit Tandanand, Thomas G. Carnahan, Victor R. Spironello, Robert J. Timko, Bernard J. Scheiner, Carl F. Anderson, D. A. Martin, Daniel R. Babich, Frank Ronald Smith, Howard W. Leavenworth, Ishwarlal D. Shah, John W. Sweeney, Kenneth L. Williams, Larry R. Powell, Lynn A. Atkins, Marion P. Krug, Martin Hertzberg, Roald Edmund Lindstrom, William P. Diamond, Pat M. Brown, Aldo L. Furno, Annie G. Smelley, Donald J. Bauer, George H. Schnakenberg, R. A. McCune, Ralph H. Nafziger, Robert R. Brown, S. E. Khalafalla, William I. Nissen

Date de publication : 1982

Éditeur : U.S. Department of the Interior, Bureau of Mines

Nombre de pages : 12