colleague
apprentice
apprenticeship
asian
beginner
bluecollar
boilers
cylinder
employee
explaining
explanation
fabrication
factory
guidance
guiding
hard hat
indonesian
indoors
industrial
industry
information
instructing
instruction
interior
job
knowhow
knowledge
laborer
learning
man
manufacture
manufacturing
men
metal
metallic
people
pointing
professional
protection
rear view
safety
showing
skilled
trainee
two
uniform
up
work
worker
yellow
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