HC Deb 11 July 1961 vol 644 cc22-3W
66. Mr. P. Noel-Baker

asked the Parliamentary Secretary for Science whether he will give the figures for the tonnage per square mile per month of dissolved deposits recorded in the test stations of Derby, Doncaster, Birmingham, Manchester, Nottingham, and Leicester.

Mr. Denzil Freeth

The available figures are set out in the table below. I would emphasise that, since deposited matter tends to fall near to the source of origin, these figures are representative only of restricted areas within the towns and cities named. They cannot be taken

AVERAGE VALUES IN TONS PER SQUARE MILE PER MONTH OF DEPOSIT GAUGE DISSOLVED MATTER AT THE SITES FOR THE PERIOD APRIL, 1957—MARCH, 1960
Deposit Gauge Site No. Summer (April-September) Winter (October-March) Year (April-March)
Derby (2 sites):
a … … 7.6 9.4 8.5
b … … 7.2 8.8 8.0
Doncaster (6 sites):
a … … 6.8 7.0 6.9
b … … 5.2 4.8 5.0
c … … 6.1 6.3 6.2
d … … 4.6 4.1 4.3
e … … 6.1 5.8 5.9
f … … 4.9 4.8 4.9
Birmingham (8 sites):
a … … 4.6 3.4 4.0
b … … 11.3 16.7 14.0
c … … 4.6 6.5 5.6
d … … 4.6 5.8 5.2
e … … 4.4 5.5 5.0
f … … 5.2 7.4 6.3
g … … 6.3 10.2 8.3
h … … 7.5 12.6 10.1
Manchester (8 sites):
a … … 5.3 3.6 4.5
b … … 7.0 6.9 7.0
c … … 6.0 6.2 6.1
d … … 9.3 10.5 9.9
e … … 7.5 7.8 7.6
f … … 5.8 5.8 5.8
g … … 7.2 7.8 7.5
h … … 4.6 4.3 4.4
Nottingham (7 sites):
a … … 4.3 6.8 5.6
b … … 4.7 7.7 6.2
c … … 5.1 8.2 6.7
d … … 5.1 8.1 6.6
e … … 2.2 3.6 2.9
f … … 2.9 4.1 3.5
g … … 2.8 4.3 3.6
Leicester (3 sites):
a … … 5.6 8.2 6.9
b … … 3.5 4.2 3.8
c … … 5.3 5.7 5.5