機器
coal
coalfield
digging
drilling
engine
environment
excavation
exploitation
extracting
extraction
ferrous
fossil
geology
ground
heavy
illustration
industrial
industry
iron
landscape
manufacturing
metal
metallurgy
methane
mine
mineral
mining
opencast
ore
pit
plant
pollution
power
production
quarry
quarrying
resource
rock
smoke
stone
technology
transport
transportation
underground
vehicle