After 80 years of operation health authorities have closed down a plant processing non-ferrous scrap metals. The ruling had both beneficial and adverse environmental impacts. The benefits include elimination of direct air pollution by metal compound emissions, but the metal-bearing dust deposited over 80 years and stirred up by winds is still a source of indirect pollution. Remediation involves partial soil replacement in residential areas in combination with covering, recultivating the 200 000 ton slag heap on the basis of detailed investigations. The adverse impact consists of the discontinuation of organized collection, break-up and processing of used car batteries. The rash, unfounded decision resulted in cases of heavy lead poisoning.