11.   The chemicals are widely used in industry as refrigerants.

12.   The detergent feeds often fitted are expensive ways of using chemicals.

13.   They use chemicals that will harm the environment.

14.   These new methods reduce the need to use harmful chemicals on crops.

15.   The chemical is used as a weed killer.

16.   Exercise caution when using these chemicals.

17.   Council officials refused to allow the chemicals to be used unless it could be shown they were not harmful to humans.

18.   If the bill became law, manufacturers using chemicals obtained from local species would have to pay a royalty to the state.

19.   Cases of contaminated apple juice are on the increase because apple growers are under pressure to use fewer chemicals, it was claimed today.

20.   A man sez he would still use chemicals if everything else failed.