In Situ Tests of Bearing Capacity of Roof and Floor in Selected Bituminous Coal Mines

A Program Report - Longwall Mining

by Alexander May, Anthony J. Barry, Benjamin I. Ferber, Bruce D. Sartwell, Clyde M. Frost, D'Arcy P. Banister, Dennis V. D'Andrea, Foster Fraas, George W. Weems, Howard D. Jacobs, James H. Russell, Manuel Gomez, Parkman T. Brooks, Richard L. Fischer, Robert E. Wood, Roger J. Morrell, Stephen D. Cramer, George Laurence Gates, Alvin R. Howard, David E. Fogelson, Fred J. Brenenborg, George M. Potter, Joseph W. Town, Kathleen Hazen, Oscar B. Nair, Paul B. Needham, Philip L. Cottingham, Robert E. Barieau, V. Anthony Cammarota, William E. Bruce, William Jefferson Boone, W. Hodge Caraway, Albert Rhode, Arlo D. Hendrickson, D. Danforth, David A. Larson, David Schlain, Everett A. Sondreal, Hal J. Kelly · 1970