Upto 1870 , the Raniganj coalfields were the only ones that had been exploited . सन् 1870 तक रानीगंज कोयला क्षेत्र का उपयोग हुआ था .
2.
South Eastern Coalfields Limited has its best mines in Chhattisgarh in the belt stretching from Shahdol to Chirmiri . साउथ ईस्टर्न कोलफील्ड़्स लि.की सबसे बढिया खानें छत्तैइसगढे में पड़ेती हैं , जो शहड़ोल से चिरमिरी तक के इलके में हैं .
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