Zinc

Galmoy is totally a subversive operation. Originally the excavation utilized room-and-pillar methods wholly but important modifications launched together benching and drift-and-fill schemes where conditions are suitable, as a means of utilizing ore recoveries. At the parallel time the mining practice is planned to make sure that no fritter away rock desires to be hauled to the surface. As an option, vandalize is stored rebellious in worked away areas of the mine, so providing supplementary sustaining to the workings. In adding mutually, between 80% and 90% of the mill tailings are given away to the underground following to thickening and the adding up of 3% to 8% bolster as a ring binder, the tailings glue being switched by a positive dislodgment pump.

The mine is planted fundamentally with Sandvik Tamrock drilling and loading paraphernalia, with Normet and Getman mass explosive charging units and other competence machines. A new-fangled LHD and a novel truck complementary in 2004-5 were credible to be the very last capital inclusions needed for the current life-of-mine groundwork. In its concentrator unit, Galmoy utilizes a conservative 2-stage flotation trail to recuperate split lead and zinc concentrates. Preliminary squashing / pulverizing and using expected SAG mill / cyclone / ball mill circuits is pursued by lead and then zinc recuperation by flotation utilizing Wemco cells. Concentrate condensing is pursued by Dorr Oliver filter-press for the removal of water.

Zinc

The innovative plan capability of 650,000t/y was hoisted to 750,000t/y in 2002-3 but ore manufacture by no means harmonized this throughput velocity. However, augmented mining frequencies in 2004 and 2005 showed that a sustainable tempo of 700,000t/y is achievable. In 2005, the mine produced 644,058t of ore, 4.3% more than in the previous year, at a higher average zinc grade but with less lead concentration.