ancient
armor
assemblage
bars
beam
bolt
bolted
bolts
building
building exterior
built structure
carpentry
century
construction
construction industry
constructive
corrosion
decrepit
deteriorated
industrial
industry
iron
iron metal
loom
metal
metal profile
metal section
metallic
nineteenth
old
oxidized
rust
rusted
rusty
scrap
scrap metal
solidity
stability
steel
structural
structure
technology
the past
time