20s
apprentice
apprenticeship
caucasian
earmuffs
engineer
engineering
equipment
eyewear
factory
happy
horizontal
industry
learning
looking
machinery
machinist
male
manufacturing
men
new
noisy
occupation
operating
people
protective
protectiveworkwear
recruit
studying
teaching
teenage
teenager
together
trail
training
twenties
two
watchful
watching
workshop