Gold in Quartz February 2016 (Vol. 85, No. 06) ICMJ''s ...
(Silica quartz dust in large amounts can be a genuine health hazard, so take care to control the dust or use a respirator to keep down the amount of dust you inhale.) When pulverizing ore, one of the most important questions for the operator to determine is how small should the miner grind the ore?