abrasive

circle

constructing

construction

craft

cut

cutter

danger

electric

electrical

electricity

equipment

flames

glove

grind

grinder

hand

heat

heavy

hot

industrial

industry

iron

light

machine

man

manufacture

manufacturing

mechanic

metal

pipe

power

protective

repairing

rotate

section

sewerage

sharp

sparks

steam

steel

strong

tool

turning

wheel

work

worker