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INDUSTRY
Industry profile
The fact file sets out the raw statistics of the industry, but these
do not reflect certain aspects particularly well.
Quarrying as such is largely concentrated in rural areas, but the main
markets are of course the large urban conurbations, cities and towns
as well as single large construction projects such as the Channel Tunnel
or a motorway. Transport systems hauling materials from quarry to consumer
are a key part of the system and a major element in the delivered cost
(a 25 mile journey can double the ex-quarry price).
Well over half of the 900 quarries in England are run by half a dozen
large companies; all except one (a family concern) are plcs and all
operate on an international scale (some with 10,000 or more employees
worldwide), particularly in Europe and USA. In addition there are over
100 smaller companies (SMEs), some with a regional presence, many others
are small family concerns operating a single unit, some with a few as
10 workers or occasionally even less, but which may still be highly
efficient.
Individual operations in England are distributed from Great Yarmouth
to Llynclys on the Welsh Borders and from the Penryn in west Cornwall
to Milfield inland from Berwick upon Tweed.
Rock quarrying is almost entirely confined to an area, north west of
a line from Swanage in Dorset to Kings Lynn, Norfolk and is concentrated
in areas where the more resistant rocks outcrop, i.e. usually in hilly
or mountainous areas. The same areas (for exactly the same geological
reasons) often have highly valued landscapes. The main areas of rock
quarrying are in the southern Pennines, Leicestershire and Mendip.
Although southern and eastern England is the main zone of sand and
gravel extraction, these aggregates are won in every (pre-unitary) county
of England. The two main concentrations of workings are in the Thames
and Trent Valleys. Significant quantities of sand and gravel are also
dredged off the South and East Coasts of England, and in the Bristol
Channel and Liverpool Bay.
Only a few areas (e.g. parts of east Wiltshire, The Weald, Lake District,
south Somerset and north west Northumberland) are in fact more than
20 miles away from an active aggregates quarry.
More detailed information on geology and resources is published by
the British Geological Survey.
Whereas most extraction is in country areas, a few quarries are in
urban areas, e.g. Rowley Regis, West Midlands, and most rail depots
receiving rock from other areas and wharves for landing marine sand
and gravel, or rock (from other parts of the British Isles or Norway),
are in towns and cities. There are an estimated 1650 depots, wharves,
asphalt and concrete plants in England, most of which are in or near
urban areas.
Many people are unaware of quarries as planning conditions are often
so stringent that environmental measures have effectively in hidden
them from view or have minimised the land area worked and left unrestored
at any particular stage. When quarrying is completed, restoration to
agriculture, forestry, nature conservation or leisure uses, or pressure
from other forms of development (housing/industrial/retail) may be so
effective that it is difficult to recognise areas formerly quarried
(this itself presents its own learning opportunities).
Individual operations vary from small units producing a few thousand
tonnes of building sand to massive multimillion-pound complexes producing
say 5 million tonnes annually for a wide range of end uses and covering
perhaps the square kilometre. By far the largest producing region of
aggregates minerals is the East Midlands with an output of over 50Mt
(leader in limestone - 25Mt and igneous rock = 14Mt; second in sand/gravel
= 10Mt). The South East is the largest consumer of all aggregates (34Mt)
and the East of England is the largest producer of sand and gravel (15Mt).