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Zinc Ore Milling at Balmat New York - 1948 - US Bureau of Mines and St Joseph Lead Corporation (Part 1 of 2)

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Source: YouTube
Added: 3 years ago
Tags: history, historical, health, safety, usa, new, york, balmat, zinc
Categories: Library
Description: From 1930 to 2001 the Balmat Mine produced 33.0 million tons with a grade of 8.7% zinc. The Balmat-Edwards mining district is located in St. Lawrence County, New York. Balmat ores contained an average of 1200 ppm (0.12 percent) of mercury which is considered among the highest among zinc deposits in North America. Mercury was eliminated by volatilization from concentrates during roasting. The Balmat-Edwards deposits, a major source of concentrate to Monaca, also contained fluorine-bearing mineral. After milling, the ore from the Balmat mine was shipped to the Monaca smelter at Josephtown, Pennsylvania for final processing. For more information on the Balmat mine in New York and the Monaca smelter at Josephtown, Pa , read the USGA report at pubs.usgs.gov. The entire film is available at the US National Archive in College Park, Maryland.
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