Flush against the wall and covered by dust stood a small chest with a curving top.

In an instant they were gone, effaced by rubble and dust.

My beard was longer than his, and lightened by dust.

He is a stocky man with a white beard made dingy by dust.

Which is showing that the loss of capicity to grow in land by the chemicals and dust.

Other anticipated problems, like contamination of the mirror by dust around the spacecraft just did not happen.

Some areas of the city have been polluted by radioactive dust.

The gleam of treasure was gone, covered by rubble and dust.

The sky, where not interrupted by smoke and dust, was baby blue.

I guess what he means by dust is heroin or cocaine.