Wear protective gloves when handling grout; it contains cement, which is caustic.

Because Huygens eyepieces do not contain cement to hold the lens elements, telescope users sometimes use these eyepieces in the role of "solar projection", i.e. projecting an image of the Sun onto a screen.

After making these repairs, walls can be further waterproofed by applying masonry sealer, a penetrating paint containing cement and sealers like synthetic rubber.

Q. Several years ago, my neighbor whitewashed the concrete walls of his cellar with a mixture containing lime, cement, water and some other ingredients.

Type of building board containing cement.

The cocaine was concealed in many ways, the indictment said: It was packed in boxes containing sawdust, mustard and cough medicine to disguise the drug's odor; it was also sent in crates containing Mazola corn oil, engine parts and cement, or disguised as bananas or other fruit.

Through a door half off its hinges, the searchers saw stacks of old boards and bags that had once contained cement.

Because grout is caustic (it contains cement), wear rubber gloves.

Concrete mixes may contain too little expensive cement, thus weakening the hardened material.

When using trisodium phosphate or any product containing cement, wear rubber gloves and goggles to protect against irritation.