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English: This is a map showing subdistricts of the Southeast Missouri Lead District and the locations of mines opened since 1953, some now closed, all on the west side of the district. The Indian Creek Mine opened in 1953 following exploration for new deposits to replace those being depleted in the Old Lead Belt, and development of the Viburnum ...
The Southeast Missouri Lead District, commonly called the Lead Belt, is a lead mining district in the southeastern part of Missouri. Counties in the Lead Belt include Saint Francois, Crawford, Dent, Iron, Madison, Reynolds, and Washington. This mining district is the most important and critical lead producer in the United States. [1] [2]
The gold-colored mineral is chalcopyrite. Size: 3.9 x 3.4 x 2.5 cm. The Tri-State district was a historic lead-zinc mining district located in present-day southwest Missouri, southeast Kansas and northeast Oklahoma. The district produced lead and zinc for over 100 years.
Easily mined surface deposits of lead were depleted by the mid-19th century, [20] though the state geologist reported small-scale surface mining and refining around Old Mines in 1867. [21] When lead production escalated after the Civil War with capital-intensive deeprock mining techniques, it did so in new areas east of Potosi and Mine a Breton ...
Major gold mining in California began during the California Gold Rush. Gold was found by James Marshall at Sutters Mill, property of John Sutter, in present-day Coloma. In 1849, people started hearing about the gold and after just a few years San Francisco's population increased to thousands.
The Missouri Department of Conservation (MDC) administers hundreds of parcels of land in all counties of the state. Most areas are owned by the department; some are leased by the department; some areas are managed under contract by the department; and some areas are leased to other entities for management.
Usually the mines are said to contain valuable elements or minerals such as gold, silver or diamonds. Often there is a map or other document allegedly detailing the history or location of the mine. Common to all the lost mine legends is the idea of a valuable and mysterious resource being lost to history.
In 1970, South Africa produced 995 tonnes or 32 million ounces of gold, two-thirds of the world's production of 47.5 million ounces. [2] Production figures are for primary mine production. In the US, for example, for the year 2011, secondary sources (new and old scrap) exceeded primary production. [3]