: a bed of coal usually thick enough to be profitably mined
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The coal seam fire, located approximately one mile northwest of Meeker, has been managed over the years to address hot spots and concerns.—Christa Swanson, CBS News, 4 May 2026 What to see today The highlight of a visit to the Beckley Exhibition Coal Mine is a ride on a mining cart through the former coal seams.—Zach Wichter, USA Today, 29 Apr. 2026 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 See All Example Sentences for coal seam