: a bed of coal usually thick enough to be profitably mined
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In Jharia, India, a 1916 or so underground coal seam fire prompted the evacuation of over 100 thousand people.—Joe Salas
june 08, New Atlas, 8 June 2025 Those programs have recently grown in importance, as thinning coal seams force mining operations to dig through thicker layers of sandstone – a process that creates more silica dust, which has led to a steep rise in irreversible lung damage.—Bob Ortega, CNN Money, 4 June 2025 But over time, shrinking coal seams became more expensive to mine, making companies more sensitive to price dips.—Chris Kenning, USA Today, 1 May 2025 Again the intention is to hark back to Wrexham’s industrial heritage, specifically the jagged and uneven edges of coal seams during the area’s mining heyday.—Richard Sutcliffe, The Athletic, 14 Feb. 2025 See All Example Sentences for coal seam
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