21.   Gunpowder is still made use of in those quarries where a splitting rather than a shattering action is required.

22.   Here, Nicholson extended the range of pharmaceuticals and added fine chemicals for use in the burgeoning dyeing and photographic industries.

23.   Hereabouts can be found, in quarry spoil, the fine-grained whetstone once transported for use in steel manufacture.

24.   Heretofore, the drugs have been recommended only for use in patients who have had heart attacks.

25.   However it is quite proper to reject a request if the evidence is really being sought with a view to its use in criminal proceedings.

26.   However, problems stemming from its lack of use in the preceding year became apparent later.

27.   However, the choice significantly affects the final geographical distribution and their use in resource allocation has been questioned.

28.   However, the concept of social responsibility and service is of limited use in developing a radical social movement.

29.   However, the techniques are still difficult to use in practice for arbitrary initial data.

30.   Hughes makes cellular phones for use in vehicles sold by its parent, General Motors.