Factories and Industrial Undertakings (Blasting by Abrasives) Special Regulations Jurisdiction China - Hong Kong Year 1969 Published in English Source Government Printer, Hong Kong, 1991. 1p. Price: HKD 10.00. Serial number Hong Kong Cap.59 C Descriptors [Primary] Hong Kong, abrasive blasting [Secondary] law, prohibition of use, safety helmets, silica, supplied air hoods Subject category Industries and occupations Abstract Regulations effective 28 Feb. 1969 and issued under the authority of the 1955 Factories and Industrial Undertakings Ordinance (see CIS 89-6). They prohibit, except under special authorisation, the use of free silica as an abrasive in any blasting process. They also require employers to supply blasting workers with an appropriate protective helmet and with clean fresh air. CIS No. 93-357 Database ID 59904