“You can take the liquid mercury and pass it over certain metals, in this case gold, and the gold seemingly dissolves in it to form an amalgam,” Kiefer said. “So how do you get the gold out? You hit that gold amalgam with a blowtorch, and you evaporate off the mercury. The mercury goes everywhere.”
read more... https://den.mercer.edu/mercer-on-mission-program-aims-to-reduce-source-of-mercury-pollution/