acetylene
activity
argon
burner
cassation
construction
corrosion
cut
cutter
dump
equipment
gas
glow
heap
heat
industrial
industry
iron
junkyard
manpower
manually
melt
metal
metallurgy
old
oxyacetylene
oxygen
people
pile
piled
piled up
pipe
propane
recycle
recycling
rust
rusted
rusty
scrap
site
spark
stack
steel
stock
torch
trash
waste
welder
work
worker