機器
activity
aggregate
big
construction
conveyor
crane
digging
drilling
dust
earth
environment
equipment
exploration
extraction
extreme
geology
global
granite
gravel
grunge
heavy
huge
industrial
industry
large
limestone
loading
machinery
mine
mineral
mining
moving
ore
power
quarry
quarrying
rock
steel
stone
technology
tool
transport
transportation
vehicle
work
working