Proceedings // 1985 Rapid Excavation and Tunneling Conference, [1985 RETC], New York, New York, June 16 - 20, 1985 / ed.: C. David Mann ... Sponsored by American Institute of Mining, Metallurgical, and Petroleum Engineers ... ; Vol. 2

Rapid Excavation and Tunneling Conference / American Institute of Mining, Metallurgical, and Petroleum Engineers | TIBKAT | 1985

Proceedings // 1983 Rapid Excavation and Tunneling Conference, [1983 RETC], Chicago, Illinois, June 12 - 16, 1983 / ed.: Harry Sutcliffe ... Sponsored by American Institute of Mining, Metallurgical, and Petroleum Engineers ... ; Vol. 2

Rapid Excavation and Tunneling Conference / American Institute of Mining, Metallurgical, and Petroleum Engineers | TIBKAT | 1983

Proceedings // 1983 Rapid Excavation and Tunneling Conference, [1983 RETC], Chicago, Illinois, June 12 - 16, 1983 / ed.: Harry Sutcliffe ... Sponsored by American Institute of Mining, Metallurgical, and Petroleum Engineers ... ; Vol. 1

Rapid Excavation and Tunneling Conference / American Institute of Mining, Metallurgical, and Petroleum Engineers | TIBKAT | 1983

Proceedings // 1987 Rapid Excavation and Tunneling Conference, [1987 RETC], New Orleans, Louisiana, June 14 - 17, 1987 / ed.: John M. Jacobs ... Sponsored by American Institute of Mining, Metallurgical, and Petroleum Engineers ... ; Vol. 2

Rapid Excavation and Tunneling Conference / American Institute of Mining, Metallurgical, and Petroleum Engineers | TIBKAT | 1987

Proceedings // 1987 Rapid Excavation and Tunneling Conference, [1987 RETC], New Orleans, Louisiana, June 14 - 17, 1987 / ed.: John M. Jacobs ... Sponsored by American Institute of Mining, Metallurgical, and Petroleum Engineers ... ; Vol. 1

Rapid Excavation and Tunneling Conference / American Institute of Mining, Metallurgical, and Petroleum Engineers | TIBKAT | 1987