black
bright
cast
casting
construction
dangerous
dirty
equipment
factory
fire
flame
foundry
furnace
glow
heat
heavy
hot
industrial
industry
iron
liquid
man
manufacturing
melting
metal
metallurgy
mill
molten
occupation
people
person
plant
pouring
power
production
professional
red
safety
smelter
smelting
spark
sparks
steel
technology
welding
work
worker
workers
working