(1) These Regulations may be cited as The Health and Safety (Foundries etc.) (Metrication) Regulations 1981 and shall come into operation on 1st December 1981.
(2) In these Regulations, unless the context otherwise requires, “ the principal Regulations ” mean the Regulations to be amended by these Regulations, that is to say—
The Blasting (Castings and Other Articles) Special Regulations 1949;
The Iron and Steel Foundries Regulations 1953 ;
The Non-Ferrous Metals (Melting and Founding) Regulations 1962 .