Pattinson's process
Pattinson's process Pat"tin*son's proc"ess (Metal.) A process of desilverizing argentiferous lead by repeated meltings and skimmings, which concentrate the silver in the molten bath, the final skimmings being nearly pure lad. The processwas invented in 1833 by Hugh Lee Pattinson, an English metallurgist. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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