blue
bucket
build
canyon
chalk
chalkquarry
clear
construct
day
deposit
dig
dirt
dragline
earthmover
environmental
excavator
expand
gravel
green
ground
hang
hoist
industrial
industry
landscape
machinery
mineral
mining
mountain
natural
open
operate
ore
pile
pit
pond
quarry
rock
scenery
sky
stone
summer
tranquil
vehicle
walking
water
work