the mining company said. The cave-in happened at 4:37 am in the Qianjiaying mining subsidiary of Kailuan (Group) Limited Liability Corporation, a major State-owned coal mining company in Hebei ...
In the late 1790s, European settlers arrived in the Green Valley where, among other uses, the Mammoth Cave became a mine for saltpeter, a mineral used in gunpowder. During the War of 1812 between ...
Vale sees a potential to unlock 1.6 billion tons of iron ore reserves — including those in the Amazon rainforest — if the government tweaks rules around mining in caves, according to a ...
Brazil is revisiting rules that protect caverns from exploration and development with measures that could help advance energy projects and boost Vale’s iron-ore prospects in the country. “It’s a ...