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Tor′ta.

A flat circular heap of slimes of silver ore, from which the water has partially evaporated till it has become of a proper consistency for tramping. The auriferous or argentiferous slimes are treated by the Patio process, — salt, magistral, and mercury being added to the torta and tramped in by animals every alternate day. The heap is also turned by wooden shovels, and subsequently washed, the metalliferous portions being separated from the earthy mud by gravity. See amalgamator, page 75.

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