coal mine

n.

煤矿，煤矿坑；

复数：coal mines

Underground coal mine monitoring with wireless sensor networks
Underground coal mine monitoring with wireless sensor networks
Passive treatment of coal mine drainage. Information circular/1994
Application of No Terminal Rope Winch in Longgu Coal Mine
Theory of the propagation of UHF radio waves in coal mine tunnels
Heavy metal pollution of coal mine-affected agricultural soils in the northern part of Bangladesh.
Coal mine methane: A review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction
From Darwin's Finches to Canaries in the Coal Mine — Mining the Genome for New Biology
Mobility of heavy metals associated with the natural weathering of coal mine spoils
Landscape-leval analyses of Henslow's sparrow (Ammodramus henslowii) abundance in reclaimed coal mine grasslands.