The workers not only inhaled toxic dust, but they also most likely swallowed it.

Most of the rats had died from inhaling toxic dust.

Most people associate lead poisoning with paint chips and toxic dust.

After 9/11, the park was covered with debris and more than a foot of toxic dust.

Maybe - though the national security benefits of failing to remove toxic dust escape me.

What does all this have to do with toxic dust?

Usually people ask us to clean up toxic dust.

Two local members of Congress have introduced federal legislation to provide compensation to people injured by the toxic dust.

But not always, and this gives rise to the transport of toxic dust.

"But this is the first time we've ever been asked to preserve toxic dust."