activity

building

bulldozer

city

closeup

constructing

constructional

demolition

detent

dig

digger

dipper

dissociate

dredge

emphasis

equipment

excavator

hydraulic

industrial

iron

jamb

jaw

job

ladle

leaf

loader

loading

machinery

mover

multifunctional

new

outdoor

paw

pump

retractable

road

scenic

scoop

security

stop

technics

technique

telescopic

tractor

unloading

work

working

yellow