Barrel process

Bar´rel proc´ess

1.(Metal.) A process of extracting gold or silver by treating the ore in a revolving barrel, or drum, with mercury, chlorine, cyanide solution, or other reagent.
References in periodicals archive ?
They are cutting through the pork barrel process which allowed Liberal governments to launder money in Quebec and a few favoured ridings elsewhere to purchase junk.
Consistent, controllable process heating and cooling system featuring five barrel process zones with the three downstream zones using water cooling--a design that is said to be "nearly maintenance free," compared with that of oil-cooled systems;
The use of a real slurry-density in the barrel, the amount of side water, and its carefully controlled entry into the barrel mark major improvements over the Blackett barrel process.