abstract
auger
automated
bit
closeup
construction
controls
cut
detail
drill
drilling
engineering
enterprise
equipment
factory
grey
hand
hole
industrial
industry
iron
ironworker
lathe
making
manufacturing
metal
metallic
metalwork
milling
people
perforator
plate
power
precision
press
production
shavings
silver
single
stainless
steel
technology
tool
work
worker
workshop