TUNNEL BORING MACHINE VS DRILL- AND- BLAST, SOME RECENT U.S. BUREAU OF RECLAMATION EXPERIENCE.MISTEREK DL; SCHOEMAN KD.1977; IN: MECH. BORING DRILL BLAST. TUNNELLING. US-SWEDISH UNDERGROUND WORKSHOP. 1. STOCKHOLM; 1976; STOCKHOLM; SWED. COUNC. BUILD. RES.; DA. 1977; PP. 137-155; BIBL. 5 REF.Conference Paper

PRECAST CONCRETE SEGMENT LINING FOR BUCKSKIN MOUNTAINS WATER CONVEYANCE TUNNELGROSECLOSE WR; SCHOEMAN KD.1976; IN: RAPID EXCAVATION TUNNELING CONF. PROC.; LAS VEGAS, NEV.; 1976; NEW YORK; AM. INST. MINING METALL. PET. ENG.; DA. 1976; PP. 448-463; BIBL. 6 REF.Conference Paper

PRECAST CONCRETE LINERS BEAD TO TUNNEL AWARD 25% LOWER.TILP PJ; SCHOEMAN KD.1977; CIV. ENGNG; U.S.A.; DA. 1977; VOL. 47; NO 11; PP. 54-56Article