Environmental Hazards of Line Mining | BizfluentLine, composed mostly of calcium carbonate, is used primarily to produce Portland cement for the building industry. Other products that use line include breakfast cereal, paint, calcium supplements, antacid tablets, paper and white roofing materials. Line is a karst-forming rock, which produce .dangers of mining line in india,The Indian Mining Sector: Effects on the Environment . - OECDIndia has huge mineral resources. Thus the mining industry is a very important industry in. India. It only opened up to foreign investment in the 1990s, and the flow . Line. 23.8. 70.1. 109.8. 5.55. 5.61. 2% cement exported. Coal. 73.7. 211.6. 293.6. 5.41. 5.06. Coking coal exported. Copper Ore. 0.5. 5.2. 4.2. 12.42. 7.90.