Aerial fire suppressants are generally a mixture of water, ammonium phosphate — essentially ... suppressants and found heavy metals, including chromium and cadmium, in one commonly used by ...

Aerial fire suppressants are generally a mixture of water, ammonium phosphate — essentially fertilizer — and iron oxide ... McCurry, from USC, said he and other researchers tested several suppressants ...

Aerial fire suppressants are generally a mixture of water, ammonium phosphate -- essentially fertilizer ... and found heavy metals, including chromium and cadmium, in one commonly used by ...