The Doe Run Lead company plans have a new, cleaner, smelter in operation in about three years. A company spokesman says Doe Run is looking for ways to finance the $150 million plant will not release lead, carbon dioxide, or sulfur dioxide into the air.

The announcement has come a week after the company agreed with federal regulators to spend $65 million to fix environmental problems at Doe Run and eventually close its smelter at Herculaneum.