aluminum
bright
casting
construction
craft
dirty
equipment
factory
fire
flame
flowing
foundry
furnace
glowing
hand
heat
heavy
hot
industrial
industry
iron
liquid
male
man
manual
manufacturing
melting
men
metal
metallurgy
molten
objects
occupation
plant
pouring
power
red
safety
skill
smith
smoke
spark
steel
technology
tool
traditional
work
worker
working
workshop