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52
in a worker employed in handling this substance were reported to
be clear.
(b) Asbestos particles
One firm employed a man in a temporary occupation drilling
asbestos sheets, for two half days per week in an open atmosphere.
Should this work increase the firm stated they were intending to
install an extractor plant.
Fumes
Lead burning in the repair of accumulators was carried on in
a small way as a part time occupation. This case was under
observation by the appointed factory doctor.
Small quantities of fuming nitric and other acids were used
by some firms but were handled with great care in fume extraction
cabin ets.
Gases Vapours and Liquids
(a) Carbon monoxide
Its dangerous properties were well known to the garages
visited and suitable ventilation was provided with reduction of
engine running to a minimum. But its danger was certainly not
realised by one firm where a metal chimney inside the factory was
fractured in many places. This was immediately pointed out to
the manager and arrangements for repairs put under way at once.
(b) Carbon tetrachloride and Carbon bisulphide
These were used as rubber solvents and cold curing of rubber
respectively. Proper precautions were taken by the firm handling
these substances and the away draught fume cabinet was entirely
satisfactory.
(c) Trichlorethylene was used by one laundry for cleaning
purposes. The modern enclosed process was very satisfactory,
Nevertheless it was still possible to faintly smell this substance
in the atmosphere of the room.
(d) Cellulose Spraying was carried out strictly according to
regulations Spraying Booths providing a satisfactory method with
their extraction fans and ducting to the outside atmosphere. In
one instance the ducting could have been extended high above the