to prove where a heavy metal came from," McCurry said. "We're working on that." Perimeter, the manufacturer of the Forest Service's fire retardant, said McCurry's research was on a formulation ...

The Forest Service says heavy metals aren't added to fire retardants, "But may be present as naturally occurring impurities in the retarding salts (which come from the same source as crop ...

Crews battling the deadly Los Angeles wildfires have been dropping a bright pink fire retardant across the city ... have contributed to high levels of heavy metals found in California waterways.

to prove where a heavy metal came from,” McCurry said. “We’re working on that.” Perimeter, the manufacturer of the Forest Service’s fire retardant, said McCurry’s research was on a ...

A study by researchers at the University of California, Los Angeles, published last year claimed that long-term fire retardants contained heavy toxic metals. The manufacturer of Phos-Chek ...