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Thornton Quarry is one of the largest aggregate quarries in the world, located in Thornton, Illinois just south of Chicago. The quarry is 1.5 miles (2.4 km) long, 0.5 miles (0.80 km) wide, and 450 feet (140 m) deep at its deepest point.
Rock of Ages granite quarry, viewed from an observation platform during a factory tour Rock of Ages granite shed. Rock of Ages Corporation is a granite quarrying and finishing company located in Graniteville, Vermont. It was founded in 1885.
This is the world's largest "deep hole" granite quarry. It produces Devonian Barre granite. Graniteville is home of its owner, the 1885-founded Rock of Ages Corporation, since 2016 part of Polycor, Inc., the largest producer of marble and granite in North America. Quarrying continues, and the quarry may be visited by the public.
View overlooking the quarry. Rubislaw Quarry is a quarry situated at the Hill of Rubislaw in the west end of the city of Aberdeen, Scotland.. The quarry is one of the biggest man-made holes in Europe at approximately 466 ft. (142m) deep, and with a diameter of 394 ft. (120m). [1]
The mine is the largest human-made excavation, and deepest open-pit mine in the world, [4] [5] which is considered to have produced more copper than any other mine in history – more than 19,000,000 short tons (17,000,000 long tons; 17,000,000 t). [5] The mine is owned by Rio Tinto Group, a British-Australian multinational corporation.
The granite is mined at the E. L. Smith Quarry, the world's largest "deep hole" granite quarry, owned by the Rock of Ages Corporation. All of the stones in the Hope Cemetery in neighboring city of Barre are made with Barre granite. [3] "Barre Gray" granite is sought after worldwide for its fine grain, even texture, and superior weather resistance.
This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]