Caving and Subsidence at the Copper Mountain Mine
W. I. NELSON; K. C. FAHRNI
THE orebodies at Copper Mountain lie along and within a few hundred feet of the contact of an intrusive stock of gabbro with a series of bedded volcanic rocks of the Nicola formation. These. orebodies are all entirely within the volcanic series but in many cases the centre line of the orebody at depth is directly under the gabbro contact at the surface, due to a slight overhang of the gabbro.
Caving, caving, gabbro, ore, stope, subsidence, Fault, Ore, Ores, pillar, Pillars, stope, stopes, Subsidence