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Definition of Coal mine
1. Noun. A mine where coal is dug from the ground. 
Definition of Coal mine
1. Noun. A mine from which coal ore or coal minerals are mined. ¹
¹ Source: wiktionary.com
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1. Noun. A mine where coal is dug from the ground. 
1. Noun. A mine from which coal ore or coal minerals are mined. ¹
¹ Source: wiktionary.com