
Feb 14 2013 Mining Part 3 In his threepart series Dr Buck Emberg presents a balanced examination of both the need for mining and the environmental consequences of extracting minerals He explains that mining has been a human activity since before the Stone Age and will remain so in the future He contends that mining is here to stay and we must learn to live with mines and mining companies Galena is by far the greatest ore of lead The extraction process to remove the lead from the sulfur is very simple thus lead has been extracted from Galena since the earliest times Galena from certain regions is rich in silver and some specimens may contain as much as 20 percent silver Because of this silverrich Galena is also an ore of silver Another use of Galena was its importance