DRIVING THE CUNNINGHAM TUNNEL, COLORADO, U.S.A.PROVOST AG.1976; IN: TUNNELING '76. INT. SYMP. PROC.; LONDON; 1976; LONDON; INST. MIN. METALL.; DA. 1976; PP. (23P.)Conference Paper

DRIVING THE CUNNINGHAM TUNNELPROVOST AG.1976; TUNNELS AND TUNNELLG; G.B.; DA. 1976; VOL. 8; NO 4; PP. 41-43Article

EXCAVATION AND SUPPORT OF THE NORAD EXPANSION PROJECTPROVOST AG; GRISWOLD GG.1979; INTERNATIONAL SYMPOSIUM TUNNELLING '79. 2/1979/LONDON; GBR; LONDON: INST. MINING METALLURGY; DA. 1979; PP. 379-395; BIBL. 5 REF.; 17 ILL.Conference Paper