Mr. Edwardsasked the Under-Secretary of State for Air how many companies supply aeroplane dope to the Ministry as Ministry contractors; and under what conditions new manufacturers who may wish to supply this material are allowed to tender?
§ Lieut.-Colonel MuirheadSeven firms are approved for the supply of aeroplane 1249W dope. As regards the second part of the question new manufacturers are required to submit the material offered to laboratory and service tests, each of six months' duration, with a view to ascertaining that the required standards as regards adhesion to fabric, tautening properties, durability, etc., are complied with.