background

mine

mineral

stone

heap

nature

environment

energy

cube

man

black

power

dark

bucket

gloves

effect

smoke

industry

ecology

hot

heat

clean

helmet

tools

fuel

material

dirty

Pollution

manufacturing

burning

station

worker

load

gas

things

coal

resources

central

shovel

flip

deposits

extraction

extract

lignite

types

metallurgical

miner

exploitation

bituminous

pickaxe