adult
background
black
caucasian
charcoal
coal
cutout
danger
dark
death
dirty
exploitation
extraction
fossil
fuel
hard
hardhat
industry
job
labor
labour
lignite
male
man
mine
miner
minerals
mining
occupation
ore
people
person
portrait
processing
production
profession
radio
resources
risk
rock
salary
soot
stone
strong
talking
tunnelling
twoway
underground
work
worker