Appendix 'A'

Any works or that part of works in which.—

(a) The manufacture, manipulation or recovery of any of the following is carried on:-

(i) sodium, potassium, iron, aluminium, cobalt, nickel, copper, arsenic,

antimony, chromium, zinc, selenium, magnesium, cadmium, mercury,

beryllium and the irorganic and inorganic salts, alloys, oxides and

hydroxides;

(ii) ammonia, ammonium hydroxide and salts of ammonium;

(iii) the organic or inorganic compounds or sulphurous, sulphuric, nitric, nitrous,

hydrochloric, hydroflouric, hydroiodic, hydrosulphuric, hydrobromil boric;

(iv) cyanogen compounds, cyanide compounds, cyanate compounds;

(v) phosphorous and its compounds other than organo-phosphorous

insecticides;

(vi) chlorine.

(b) hydrogen sulphide is evolved by the decomposition or metallic sulphides,

orhydrogen sulphide is used in the production of such sulphides;

(c) bleaching powder is manufactured or chlorine gas is produced in chloralkali plants;

(d) (i) gas tar or coal tar or bitumen or shale oil asphalt of any residue of such tar is

distilled or is used in any process of chemical manufacture;

(ii) tar based synthetic colouring matters or their intermediates are produced;

(e) nitric acid is used in the manufacture of nitro compounds;

(f) explosives are produced with the use of nitro compounds;

(g) aliphatic or aromatic compounds or their metallic and non-metallic derivatives or

substituted derivatives, such as chloroform, ethylene glycol, formaldehyde,

benzylechloride, phenol, methyl ethyl ketone peroxide, cobalt, carbonyl, tungsten

carbide etc. are manufactured or recovered.