: a bed of coal usually thick enough to be profitably mined
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In addition, Toor said, Craig 1 was built near a coal seam that has had all of its coal mined.—Ella Nilsen, CNN Money, 31 Dec. 2025 The short version is that methane is embedded in coal deposits, and as miners dig to expose coal seams, the gas escapes, and continues to do so long after a coal mine reaches the end of its operating life.—Umair Irfan, Wired News, 21 June 2025 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 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 See All Example Sentences for coal seam
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