Stay Out and Stay Alive! Three Kids Mine скачать в хорошем качестве

Stay Out and Stay Alive! Three Kids Mine

Youtube Hikingventure, Youtube / Manganese mine – In the late 18th and early 19th centuries, manganese, an important metal needed to strengthen steel, was supplied to Untied States manufacturers mostly by foreign mines. With the onset of World War I, these sources of manganese were cut-off, and an intense search for domestic sources was undertaken. In Nevada, this prospecting effort led to the discovery of the Three Kids manganese deposit in 1917. This mine provided most of Nevada’s manganese production during the last two years of WWI and operated intermittently until 1961. This is the largest manganese mine in Nevada and, during the 44 years of operation, more than 2,225,000 tons of ore ranging from 15 percent to 40 percent manganese was mined and treated here. Small amounts of lead, copper, silver and gold were also recovered by the mining operation.