patio processとは 意味・読み方・使い方

The patio process was a process used to extract silver from ore. The process was invented by Bartolomé de Medina in Pachuca, New Spain (Mexico), in 1554. The patio process was the first process to use mercury amalgamation to recover silver from ore. It replaced smelting as the primary method of extracting silver from ore in Spanish America. Other amalgamation processes were later developed, importantly the pan amalgamation process, and its variant, the Washoe process.