30s40s

5060

adult

after

age

center

clean

color

contains

conveyor

danger

environment

factory

forklift

garbage

glass

green

industrial

junk

machine

male

middle

modern

nature

no

noon

paper

people

plastic

railway

recovery

recycle

recycling

reduction

refuse

refused

removal

reuse

rubbish

sorting

station

summer

sustainability

the

throw

tractor

transfer

trash

waste

years