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33
New Furnaces and Chimneys.
The Clean Air Act provides that new furnace installations (exceeding
55,000 B.T.LTs. per hour) must be capable of operating without
emitting smoke, and in accordance with Section 3 of the Act, the
Council received notification of 29 proposals to install new furnaces.
In addition, the Council approved plans of 2 new industrial chimneys
under Section 10 of the Act, being satisfied that the height of
the chimneys would ensure the proper dispersal of all flue gases so
as not to cause any nuisance.
PREVENTION OF DAMAGE BY PESTS ACT, 1949.
The rodent control section of the staff have done much useful work
during the year in eradicating rats and mice from premises and foul
sewers.
A total of 4,317 visits was made to dwellings and business premises
throughout the year.
Complaints of infestation by rats or mice numbered 262 and
inspection and investigation revealed rat infestation at 172 premises
and mice infestation at 73 premises. By the end of the year infestation
had been cleared at 221 of these premises.
Treatment of the foul sewers was carried out on two occasions, a
total of 827 visits being made for this purpose in connection with
inspection, baiting, poisoning and checking results.

There has been a marked and continued improvement in the work
of sewer treatments, largely due to the diligence of the Rodent