radioactive waste products.” The Dry Cleaning Special Regulations, 1949 dated 29 November 1949 sought “to prohibit the use of liquids with a flash point below 32° C. (90° F.) from being used for dry cleaning otherwise than by spotting.” The Blasting (Castings and Other Articles) Special Regulations, 1949, Dated 29 November 1949, “prohibit sandblasting and deal with the blasting enclosure, the cleaning of used abrasive, ventilation plant, inspection, examination and maintenance of equipment, personal protective equipment and clothing, the cleaning of blasting equipment, the employment of young persons, and the reporting of defects in the equipment. Sandblasting is prohibited in Section 5, which reads: "No sand or other substance containing free silica shall be introduced as an abrasive into any blasting apparatus." The Chief Inspector is empowered to grant exemptions from the regulations.” UK: The matters dealt with by the Jute (Safety, Health and Welfare) Regulations dated 21 July 1948 “include the lifting and carrying of loads by women and young persons, ventilation, temperature and humidity, welfare, construction and use of machinery and sale and hire of machinery.” The Magnesium (Grinding of Castings and Other Articles) (Special Regulations) Order of December 1946 contained special measures "respecting the maintenance of plant and apparatus; precautions against causing sparks; the interception and removal of dust; automatic operation of appliances; protective clothing; and prohibition of smoking, open lights and fires." For those workers engaged in luminising processes, the Factories (Luminising) Special Regulations (1947) prohibited the employment of those under the age of 18 and ordered "an initial medical examination to be carried out before the seventh day of employment; subsequent examinations are to be carried out once a month."Under the terms of the Blasting (Castings and Other Articles) Special Regulations (1949) "no sand or other substance containing free silica is to be employed in any blasting process," while the Foundries (Parting Materials) Special Regulations (1950) prohibited the use of certain parting powders "which give rise to a substantial risk of silicosis." The Building (Safety, Health & Welfare) Regulations of 1948 required that measures should be taken to minimise exposure to potentially harmful dust or fumes, while the Pottery (Health) Special Regulations (1947) prohibited the use "except in the manufacture of glazed tiles" of all "but leadless or low solubility glazes and prescribe certain processes in which ground or powdered flint or quartz are not to be employed." The Pottery (Health and Welfare) Special Regulations