1.

2—naphthylamine; benzidine; 4—aminodiphenyl; 4—nitrodiphenyl; their salts and any substance containing any of those compounds, in any other substance in a total concentration exceeding 0.1 per cent.

Manufacture and use for all purposes including any manufacturing process in which a substance described in column 1 of this item is formed.

2.

Sand or other substance containing free silica.

Use as an abrasive for blasting articles in any blasting apparatus (see note 1).

3.

A substance—

1. a

   containing compounds of silicon calculated as silica to the extent of more than 3% by weight of dry material; or

2. b

   composed of or containing dust or other matter deposited from a fettling or blasting process.

Use as a parting material in connection with the making of metal castings (see notes 2 and 3).

4.

Carbon disulphide.

Use in the cold-cure process of vulcanising in the proofing of cloth with rubber.

5.

Oils other than white oil, or oil of entirely animal or vegetable origin or entirely of mixed animal and vegetable origin (see note 4).

Use for oiling the spindles of self-acting mules.

6.

Ground or powdered flint or quartz other than natural sand.

Use in relation to the manufacture or decoration of pottery for the following purposes—

1. a

   the placing of ware for the biscuit fire;

2. b

   the polishing of ware;

3. c

   as the ingredient of a wash for saggars, trucks, bats, cranks, or other articles used in supporting ware during firing; and

4. d

   as dusting or supporting powder in potters' shops.

7.

Ground or powdered flint or quartz other than—

1. a

   natural sand; or

2. b

   ground or powdered flint or quartz which forms part of a slop or paste.

Use in relation to the manufacture or decoration of pottery for any purpose except—

1. a

   use in a separate room or building for—

   1. i

      the manufacture of powdered flint or quartz; or

   2. ii

      the making of frits or glazes or the making of colours or coloured slips for the decoration of pottery;

2. b

   use for the incorporation of the substance into the body of ware in an enclosure in which no person is employed and which is constructed and ventilated to prevent the escape of dust.

8.

Dust or powder of a refractory material containing not less than 80 per cent. of silica other than natural sand.

Use for sprinkling the moulds of silica bricks, namely bricks or other articles composed of refractory material and containing not less than 80 per cent. of silica.

9.

White phosphorus.

Use in the manufacture of matches.

10.

Hydrogen cyanide.

Use in fumigation except when—

1. a

   released from an inert material in which hydrogen cyanide is absorbed;

2. b

   generated from a gassing powder (see note 5); or

3. c

   applied from a cylinder through suitable piping and applicators other than for fumigations in the open air to control or kill mammal pests.