boom

claw

close

color

cutter

cutting

day

dirty

disposal

dry

environment

excavator

exterior

flame

garbage

gas

grab

heap

heavy

hydraulic

industry

iron

junk

junkyard

large

lighting

loader

long

machine

management

metal

metals

natural

old

outdoor

oxygen

people

pile

pollution

real

recycle

recycling

reuse

rubbish

rust

rusty

scrap

season

sheet

sort

sorting

stack

steel

sunny

time

torch

trash

truck

waste

worker

working

wreckage

yard