Molten sulfur can burn skin and eyes on contact, and its vapors can irritate airways. Once cooled, the product becomes a flammable solid, making the cleanup even more delicate.

The southbound lanes were opened to two-way traffic to keep vehicles moving, but the northbound lanes will be closed for at least 24 hours.

Blackwell and fellow retiree Jim Haney became whistleblowers after capturing video evidence of the pollution in the Woodland Trails West subdivision. They’re careful documentation helped police.