adult
axe
background
caucasian
charcoal
coal
cutout
danger
death
equipment
exploitation
extraction
fossil
fuel
grey
hard
hardhat
industry
job
labor
labour
lignite
male
man
mask
mine
miner
minerals
mining
occupation
ore
people
person
pick
portrait
processing
production
profession
resources
risk
rock
salary
stone
strong
tool
tunnelling
underground
work
worker