About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 46. Chapters: Silver mines, Silver mining companies, Silver mining in the United States, Rio Tinto Group, Barrick Gold, Comstock Lode, BHP Billiton, Thompson Creek Metals, US Silver, Cobalt Silver Rush, Minera Andes, Patio process, Silver Wheaton, Silver mining in Colorado, Silver mining in Arizona, Grupo Mexico, Leadville mining district, Madneuli JSC, Silver mining in Nevada, Admiralty mining district, New Gold, First Majestic Silver, San Cristobal mine, Penoles, Laurium, Hochschild Mining, Silver Standard Resources, Fresnillo plc, Minerals and Metals Group, Hecla Mining, Colorado Silver Boom, Pan amalgamation, North American Palladium, Sutro Tunnel, Silvercorp Metals, KGHM Polska Mied, Silver streaming, Coeur d'Alene Mines, Buenaventura, Dore bar, Pan American Silver Corporation, Silver Glen. Excerpt: The Rio Tinto Group is a diversified, British-Australian, multinational mining and resources group with headquarters in London and Melbourne. The company was founded in 1873, when a multinational consortium of investors purchased a mine complex on the Rio Tinto river, in Huelva, Spain from the Spanish government. Since then, the company has grown through a long series of mergers and acquisitions to place itself among the world leaders in the production of many commodities, including aluminium, iron ore, copper, uranium, coal, and diamonds. Although primarily focused on extraction of minerals, Rio Tinto also has significant operations in refining, particularly for refining bauxite and iron ore. The company has operations on six continents but is mainly concentrated in Australia and Canada, and owns gross assets valued at $81 billion through a complex web of wholly and partly owned subsidiaries. In 2007, the company was valued at $147 billion. Its head office in the United Kingdom is in the City of Westminster, London, while its A...
