Quicksilver, also known as mercury, has long been used in the process of gold extraction ... silvery white coloration. It’s also thought that mercury has been used as a tool for mining through ...

It is a singular fact that notwithstanding the large number of able mechanics that have emigrated to California, to engage in the development and extraction ... the gold from the heavy black ...

KOHAT: The illegal extraction of placer gold from the ... the district was being robbed of its mineral wealth as gold thieves and black sheep in the mineral department connived.