A furnace tapper using a thermal lance to test the purity of molten nickel in the furnace, which operates at over 1000 degrees Celsius at the Falconbridge Smelter, Falconbridge, Ontario. From the book Cage Call: Life and Death in the Hard Rock Mining Belt. An in-depth project spanning over 12-years examining communities in one of the richest mining regions in the world located in Northwestern Ontario and Northeastern Quebec in Canada.