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Tuesday, May 8, 1973
On Thursday, two one-and-a-half-ton drilling rigs will be lifted
by helicopter to the top of the landslide area. Later the drills will be
lowered progressively down the slope for similar work, again by helicopter.
A spokesman for the Public Works Department explained that the use
of helicopters to transport the drills was the most convenient way, as ordinary
methods to position them would involve cutting down trees which might disturb
the geography of the area.
Special clearance has been obtained from the Department of Civil
Aviation for the airlift.
The whole operation is expected to last several weeks, although the
airlifts will only take a few minutes each time.
A constant watch will be maintained at the sites so that advance
warning can be given in the event of danger and to enable necessary safety
measures to be taken.
A number of other sites throughout Hong Kong are being investigated
but some of these concern only flooding, euch as low-lying areas in the New
Territories.
Many of these do not need the instrumentation, and the investigations
are in the form of surveys and calculations on the possibility of flooding.
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