DRILLABILITY PREDICTIONS IN HARD ROCK TUNNELLINGBLINDHEIM OT.1979; INTERNATIONAL SYMPOSIUM TUNNELLING '79. 2/1979/LONDON; GBR; LONDON: INST. MINING METALLURGY; DA. 1979; PP. 284-289; BIBL. 7 REF.; 9 ILL.Conference Paper

PREINVESTIGATIONS, RESISTANCE TO BLASTING AND DRILLABILITY PREDICTIONS IN HARD ROCK TUNNELLING.BLINDHEIM OT.1977; IN: MECH. BORING DRILL BLASTTUNNELING. US-SWEDISH UNDERGROUND WORKSHOP. 1. STOCKHOLM; 1976; STOCKHOLM; SWED. COUNC. BUILD. RES.; DA. 1977; PP. 81-97; BIBL. 6 REF.Conference Paper