Explanatory notes
… pumice stone, talc, plaster, siliceous fossil earths, slag, aluminium oxide, glass fibres, cork, etc., used as … sheaths, tubing, conduits, tube joints; containers; rods, slabs, tiles; packing joints ( other than gaskets and … defence workers, etc. (e.g., jackets, trousers, aprons, sleeves, gloves, mitts, gaiters, hoods and masks usually …