The tanks are covered at the bottom with a thick, brown sludge, which engineers say they can handle.

It's that thick sludge they all drink, he thought.

The only difference now was that a thick sludge oozed from the hole, freezing as it fell to the ground in fist-size chunks.

This could be another rough landing.... He splashed down into a layer of thick, black sludge.

Entire villages lay buried beneath thick, black volcanic sludge.

I could feel the thick sludge of bloatblack rolling down my sides.

And now Rosie saw something she liked even less: a thick, gray-green sludge was growing between the woman's fingers like moss.

Cohn felt the thick sludge of blood running down his throat.

Around them, an unwanted audience ofgawkers slowly formed in the thick sludge of the heat.

He upended his glass and bravely swallowed the thick green sludge.