environmental
acid
aerial
chemical
contaminate
contamination
copper
cyanide
dangerous
destruction
drone
ecological
ecology
ecosystem
environment
garbage
geamana
geology
gold
green
hazardous
heavy
industrial
industry
iron
lake
landscape
leak
leaking
liquid
material
metal
mine
mineral
mining
montana
ore
pit
poison
polluting
pollution
pond
protection
river
romania
rosia
toxic
waste
water
yellow