Pakistan, Feb. 6 -- Copper is a crucial metal, and it has played an extremely vital role in commencing industrial development over the past 150 years. Geoscience Australia, by the Australian Government, points out that Thomas Edison invented the first electric light in 1878 with the help of copper that carried current to it. Similarly, Alexander Graham Bell also used copper telephone wire in 1876. Thus, be it the invention of the telephone or electric light, copper has played its vital role in the past, and it still plays its fundamental role even today in industries across the globe. As per the Government of Canada's website "Natural Resources Canada", we use copper metal in wiring, plumbing, construction, industrial machinery, electric ...