Longwall mining is a form of underground coal mining where a long single face of coal, known as a panel, is mined with a continuous cut across its entirety. Seams utilizing longwall panels are (typically 4–20 ft (1.2–6.1 m) thick).The panel is typically 10,000–15,000 ft (3,000–4,600 m) long, but can be up to 20,000 ft (6,100 m) long and 1,000–1,500 ft (300–460 m) wide. The longwall method compares with shortwall, room-and-pillar, and several others.
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👉 Longwall in the context of Store Norske Spitsbergen Kulkompani
Store Norske Spitsbergen Kulkompani (SNSK), or simply Store Norske, is a Norwegian coal mining company based on the Svalbard archipelago. It was formed in 1916, after a Norwegian purchase of the American Arctic Coal Company (ACC).
The company has 360 employees and operated two coal mines. The larger one was located in the Sveagruva settlement, about 60 km south of Longyearbyen. The Svea Nord longwall mine has an annual output of 2 million tonnes of bituminous coal. A third of it is sold for metallurgical purposes. The managing director of Store Norske Spitsbergen Kulkompani was Per Andersson. The Sveagruva mine closed in 2017.