Special industrial group B Special industrial group B
Use for
(a)
melting, calcining, sintering or reducing ores, minerals, concentrates or mattes;
(b)
converting, refining, re-heating, annealing, hardening, melting, carburising, forging or casting metals or alloys other than pressure die-casting;
(c)
recovering of metal from scrap or drosses or ashes;
(d)
galvanizing;
(e)
pickling or treating metal in acid; or
(f)
chromium plating;
other than where the process is ancillary to the getting, dressing or treatment of minerals and is carried on in or adjacent to, a quarry or mine.