asked the Secretary of State for the Environment whether he will request the Committee on Poisons to investigate the possibility of making cyanide re-activated and reused by all manufacturers and users, and to introduce legislation to ensure that cyanide is disposed of only in a legally prescribed manner.

I will examine the problems of regeneration of cyanide to see whether more could be done. I am anxious to ensure that the disposal of all wastes, particularly those of a toxic nature, should be subject to a greater degree of control. This will require legislation, proposals for which are under consideration.