The Educational Use of Aggregate Sites
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Stone Centre
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Lane, Middleton by Wirksworth, Derbyshire, Derbyshire DE4 4LS
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Contents > Sheet B3 (Users)
Appendices
MODULE: THE LIMESTONE INQUIRY, 21ST CENTURY
Sheet B3 (Users)
Industrial users of limestone
You represent some of the industrial users of the limestone quarried
by RQH. At the Inquiry you will have to present your arguments in support
of the extension to the quarry.
You and the other representatives should first read this briefing.
Then discuss the arguments you will put forward in a two-minute presentation
at the Inquiry. You may want to elect a single person to speak, or share
it between you.
The main points of your case
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For chemical use it is essential that the calcium carbonate used
is pure. Any impurities have to be removed, and this requires extra
and expensive processes.
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If the limestone were of lower purity, more waste would be produced
and more energy used in some processes, e.g. in steel-making - this
is not good environmentally.
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Limestone deposits are widely distributed in Britain and are quarried
for many different uses. The deposits in this National Park are
particularly useful. They are very pure indeed. The deposits are
easy to get at. They are near to the big industrial centres of the
Midlands and the North West, but unfortunately they are also in
areas of outstanding landscape.
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Limestone from this district has supplied the chemical industry
in Cheshire and South Lancashire since the late eighteenth century.
The quarry operators understand the needs of the chemical industry.
There are suitable transport links by rail and road. It would be
very disruptive socially and economically, if other supplies had
to be found.
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The National Park Authority considers that too much of the limestone
is being used for aggregate in road-building and for concrete. You
will therefore wish to stress the important uses of limestone in
the chemical industry, in agriculture, steel-making, water purification,
glass making, combating air pollution and making efficient use of
polymers. The General Briefing summarises some of the uses of limestone
and limestone products in industry. You can point out that it is
unavoidable that some aggregate is produced. This is because only
part of the limestone is of the right chemical purity for use in
the chemical industry.
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The quarry produces about one fifth of the UK's high purity limestone
requirements and is so important that small quantities are even
exported to Europe.
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Whereas demand for some uses is declining, demand for use in pollution
control (to clean up rivers and sulfur emissions from power stations)
is increasing significantly.
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Alternative sources are the North Wales Coast, Clwydian Hills,
the Yorkshire Dales, the fringes of the Lake District, the southern
edge of the Brecon Beacons and the Gower Peninsula - all are National
Parks or Areas of Outstanding Natural Beauty. Other sources are
in Scandinavia and Spain. All alternative sources in this country
are at least twice as far from the main consumers, involving higher
transport (including energy and pollution) costs.
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