In Cumbria, deep under the rolling farmland, lies the world’s deepest gypsum mine. Gypsum, a mineral utilized in the production of plaster for buildings, schools, and offices, is a crucial raw material that surrounds us daily. Located near Long Marton village, the Birkshead drift mine operates at a depth of 1,000 ft (305m), featuring an extensive system of conveyor belts transporting the mined stone for processing. Shift manager Peter Richardson expresses his comfort and familiarity with the underground environment, stating, “You’ve got to have your wits about you all the time, but I just feel at home down here.”
The 30ft (9m) high tunnels of the mine, wide enough to accommodate a Range Rover, have been operational since 1977, contributing to the production of plasterboard for the construction industry. The grey tunnels exude a dusty aroma, with workers acknowledging that the spacious ceilings diminish the feeling of being in a traditional mine. While cut off from external weather conditions, the ventilation system occasionally carries scents of freshly cut farmland grass, serving as a reminder of the world above ground.
Machines at the Birkshead mine can cut through 3.3ft (1m) of gypsum per hour, boasting efficient production capabilities. Conveyor belts transport vast quantities of material daily to a factory in Kirkby Thore, operated by British Gypsum. The underground environment necessitates strict safety measures, including a specially designed room equipped with life support systems, food supplies, and water in case of emergencies. Despite the potential hazards associated with mining, workers like Peter Richardson feel secure and prepared, emphasizing the importance of vigilance and respect for the underground surroundings
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