They will cause oxidisation or contamination to certain types of materials.

These cause contamination of ground water, and other problems.

The signs must further say that the improper disposal of such products could cause environmental contamination.

It killed at least 32 people and caused widespread radioactive contamination.

What is the real risk that disruption of asbestos will cause contamination?

While there is no evidence that genetic engineering caused contamination to the supplement, the full answer may never be known.

Possessed of special knowledge, the lawyer can cause contamination.

Frequently the gloves ripped, causing contamination of his hands and arms.

This loss of pressure caused potential contamination of the water supply.

One major concern is disposal of used lead batteries, which can cause environmental contamination if not recycled.