You searched for: “amalgamation pan
amalgamation pan (s) (noun), amalgamation pans (pl)
An iron container in which precious metal ores can be ground with water and further treated with mercury and chemicals until extractions of the metals are completed; used especially, formerly, to separate gold from its ore: Before all the fancy terminology and processes, the early gold miners used a shallow pan, the precursor to the amalgamation pan, and utilized water to separate gold from the rocks and gravel.