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During the year six plans were examined for this purpose.
In every instance the original proposals were un
satisfactory but the proposed chimney heights were increased
after consultation with the parties concerned or the method
of heating was changed to one for which a low chimney was
adequate or indeed no chimney at all was necessary.
This section is the only control which the Clean Air
Act gives over products of combustion other than smoke
grit and dust if the effects of gaseous products of com
bustion including sulphur dioxide are to be minimised the
best possible use should be made of these powers
Unfortunately, in the eyes of some Town planners and
Architects factory chimneys are in an even more unfortunate
position than the Victorian child who was expected to be
seen but not heard, they are not even expected to he seen
All clashes of interest which have yet arisen have been
solved without public health interests being unduly pre
judiced.
(c) Mew Furnaces.
Ten notifications under Section 3 of the Clean Air
Act were received regarding the installation of new furnaces
but no applications for prior approval were made
(d) The Dark Smoke (Permitted Periods) Regulations 1958.
These Regulations which came into force on the 1st
June lay down the maximum periods for which dark and black
smoke may be emitted from industrial furnaces.
It appears that local industry is well equipped to comply
with these requirements No contraventions were observed
and no applications were received for temporary
certificates of exemption which the Council nay grant in
cases where they are satisfied that it has not been practicable
to alter or equip a building so as to avoid contravention
of the Regulations.
(e) Grit and Dust.
Section 5 of the Act requires that the emission of
dust and grit from furnaces shall be minimised. Although
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