The ruling coalition agreed in principle Tuesday to legislation that would mandate the collection and destruction of chlorofluorocarbon gases known to deplete the ozone layer and induce global warming, coalition officials said.

The bill is expected to be formally announced Friday. It covers chlorofluorocarbons, hydrochlorofluorocarbons and hydrofluorocarbons used as refrigerants in industrial cooling systems, commercial refrigerators and automobile air conditioners.

If the legislation passes, registered businesses would collect the gases from industrial cooling systems and bill owners of the machines for the retrieval, transport and destruction of the gases.