§ Mr. Skeetasked the Secretary of State for Trade and Industry what evaluation he has made of the use of colliery shale for aluminium production in the United Kingdom, with the prospect of potash as a by-product.
§ Mr. Tom BoardmanAppraisals made so far have not indicated the possibility of any economically viable processes for the extraction of aluminium from colliery shale either with or without potash as a by-product.