燃やす
accuracy
analyzing
below
bituminous
black
burning
care
central
clean
closeup
coal
cube
dark
deposits
ecology
effect
energy
environment
exploitation
exploration
extract
extraction
fossil
fuel
glove
gloves
gold
hand
hands
heat
hold
holding
human
humanhand
industry
lignite
load
male
manufacturing
men
metallurgical
mine
miner
rock
show
things
treasure
underground
worker