§ Mr. Watsonasked the Secretary of State for Trade and Industry what is the current United Kingdom output of high quality silica sand for crystal and flint glass manufacturing; and what was the output in each of the last 10 years.
§ Mr. TrippierOfficial statistics on silica sand are given in the annual "United Kingdom Mineral Statistics" (HMSO) and provide data on production of silica sand for 291W glass manufacture as a whole. I regret that the more detailed statistics required cannot be derived from the available data.