Long Toms influencing the development of the reverberatory furnaceApr 11 the following is an outline of a basic mill process. Receiving Room - Ore was received at the top of the mill building. Crushing - The raw ore went ...dissolving it in a weak cyanide solution. May be carried out in tanks inside a mill or in heaps of ore out of doors. Sodium cyanide – A chemical used in the milling of gold ores to dissolve gold and silver. Heap leaching – A process whereby valuable metals
