bin

bottle

business

can

collection

company

container

conveyor

crushing

disposal

dump

ecological

ecology

element

energy

environment

factory

garbage

green

grinding

heap

icon

industry

junkyard

ladder

machine

manufacturing

material

nature

nobody

paper

pile

plant

plastic

pollution

process

processing

production

recycle

recycling

renewable

renewal

reuse

sorting

tank

technology

trash

truck

waste

workshop