35
2
occurring and particular care was taken in ensuring a tight
pack between the spiling (the timbers which support the
roof) and the natural ground.
Minor movements are reported to have occurred on
the 7th November, 1940, and have continued to develop at
varying rates since that date. I first saw the defects on
the 22nd November, when I gave instructions for work to
cease.
-
The immediate cause is probably shock from
blasting although the charges were kept down to the minimum
possible - which has had its effect not only on the fabric
but on the soil itself. This soil movement is probably
acting along a defined plane of slip and accounts for the
assumed tipping of the toe of the foundations and a movement
outwards of the base of the building which has since followed.
(sd.) H. J. PEARCE.
D.D.P.W. (D.)
8.4.41.
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