Vézina, Raynald Underground mining methods Cambior's canadian mining operations - Lima Sociedad Nacional de Minería y Petróleo 1996 - pp. 100-106 ilus. Subjects--Topical Terms: EXPLOTACION MINERAMINERIA SUBTERRANEA Subjects--Index Terms: CAMBIOR Universal Decimal Class. No.: P/061.3:622.342.1(100)/S56|28