by Bernard S. Covino, John V. Scalera, Philip M. Fabis

1984

by William D. Riley, Bernard S. Covino

1982

by United States. Bureau of Mines, Bernard S. Covino

1979

by Benjamin W. Haynes, Bernard S. Covino, Charles A. Seitz, Donald A. Wilson, Douglas R. Tesarik, George A. Savanick, George M. Martinez, H. B. Salisbury, John Durkin, John J. DeBarbadillo, Joseph A. Perry, Lawrence E. Schultze, Lawrence L. Brown, Leonard J. Prosser, Nicholas P. Kripakov, Philip W. Holland, Richard P. Beyer, Roy Ernest Peterson, Albert R. Rule, Arthur F. Colombo, Donald J. Bauer, Gary W. Kramer, George M. Lucich, Gerald L. Finfinger, Harry V. Makar, John K. Pargeter, John M. Gomes, Leslie J. Duchene, Murray Rosen, Paul C. McWilliams, Raymond F. Farrell, Roy Greenfield, Walter G. Krawza, Alick J. Mackie, C. B. Daellenbach, Joseph Cervik, Joseph H. Bilbrey, July A. Jolly, Michael T. Morimoto, Morton Min Wong, William D. Riley

1981