Go underground! UG mining, once a predominant mining method, is barely at 7 of India’s total coal output today. But OC deposits are depleting, hence, UG mining needs to return.    Also read: Enough coal stocks to ensure smooth power supply during polls CCEA approves power projects worth over Rs 31,000 crore Large hydro projects come under renewables ambit Global coal market sends mixed signals China coal production may rise in 2019   Plus regular features, corporate, logistics, international news & price analyses.