§ 45. Mr. William Shepherdasked the Lord President of the Council what tests have been made of the M-L brick which is produced from fly ash.
§ Mr. Herbert MorrisonTests made at the Building Research Station on the suitability of this material for internal wall and partition construction have covered strength, fire-resistance, expansion on wetting and shrinkage on drying and density. The results were discussed with the promoters, and arrangements have recently been made for a further series of tests to be made on an improved material.