Prime Minister Narendra Modi wants to end decades of crippling electricity shortages and turn this country into a manufacturing dynamo. At the state-run behemoth’s mine here, men still move coal in baskets on their shoulders. At another project, electricity is so unreliable miners descend in a steam-powered elevator. One giant mine that opened last year runs at a fraction of capacity because a rail line to haul its coal is mired in bureaucracy. Committees and economists have long studied how to whip Coal India, the world’s largest producer of the fuel, into shape. Labor unions and their allies oppose ideas such as breaking the company into smaller units or privatizing it. Mr. Modi is taking a gradual […]