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This map shows the location on active mines in New York for Natural Stones that are commonly used as building products -- Bluestone, Gneiss, Granite, Marble, and Sandstone. Data Source: https://data.ny.gov/Energy-Environment/Mined-Land-Permits-Facility-Map-Beginning-1974/eqhx-64sc/about
The Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing, Minnesota, United States, is the largest operating open-pit iron mine in Minnesota. The pit stretches more than three miles (5 km) long, two miles (3 km) wide, and 535 feet (163 m) deep.[2] It was established in 1895 and was one of the world's first mechanized open-pit mines.[3]
The mine, located in the Mesabi Range, supplied as much as one-fourth of all the iron ore mined in the United States during its peak production from World War I through World War II. This prodigious output made Minnesota the nation's largest iron ore producer and the U.S. the world's largest steel manufacturer.[3]
The Hull–Rust–Mahoning Mine was named a National Historic Landmark in 1966.[1] The city of Hibbing has long maintained a public overlook and visitor center on the rim of the mine, attracting tens of thousands of tourists each year. In 2019, the overlook was to be moved as mining operations expand.[4]
Springhill mining disaster may refer to any of three Canadian mining disasters that occurred in 1891, 1956, and 1958 in different mines within the Springhill coalfield, near the town of Springhill in Cumberland County, Nova Scotia.
The mines in the Springhill coalfield were established in the 19th century, and by the early 1880s were being worked by the Cumberland Coal & Railway Company Ltd. and the Springhill & Parrsboro Coal & Railway Company Ltd. These entities merged in 1884 to form the Cumberland Railway & Coal Company Ltd., which its investors sold in 1910 to the industrial conglomerate Dominion Coal Company Ltd. (DOMCO). Following the third disaster in 1958, the operator Dominion Steel & Coal Corporation Ltd. (DOSCO), then a subsidiary of the A.V. Roe Canada Company Ltd., shut its mining operations in Springhill, and they were never reopened. As of 2015 the mine properties, among the deepest works in the world and filled with water, are owned by the government of Nova Scotia, and provide Springhill's industrial park with geothermal heating.
Some fascinating picture of marble mining in Danby, Vermont. I've camped up that way in the National Forest but never been by any of the marble mines. I should think about going up there again, in the spring, once the forest service roads open again.