tractor

pollution

landfill

junk

waste

rubbish

dump

garbage

environment

trash

recycling

machine

loader

refuse

scoop

heap

pile

ecology

loading

bucket

plant

disposal

bulldozer

contamination

bunch

dirt

bionomics

dozer

mountain

works

rake

truck

plastics

pack

unsorted

facility

dirty

sorting

conversion

household

hill

processing

industrial

handling

treatment

shovel

factory