The Quarrying Industry
As the oldest industry
in the UK, it is unsurprising that quarrying
was an industry in ancient Egypt. Jaw crushers
may not have been in use at this time but
the essence of the quarrying industry was
the same.
The Study of Quarrying in Egyptian
Times
The study of the Aswan quarries, the only
in-depth study of Egyptian hard-stone workings
has provided an insight into ancient quarrying
techniques. It has been estimated that around
45,000 cubic metres of stone were removed
from the Aswan quarries during the Third
to Sixth Dynasties and it seems likely that
loose surface boulders would have been exploited
first.
Quarry Tools
Although it is clear that the ancient Egyptians
did not use jaw crushers and impactors to
crush and cut rock, it remains a bit of
a mystery exactly what tools were used for
quarrying. The tool marks which can be found
preserved on many soft-stone quarry walls
suggest that some form of pointed copper
alloy pick, axe or maul, followed by the
later use of a mallet-driven pointed chisel
from the Eighteenth Dynasty onwards. For
harder material such as granite it is more
likely that the boulders were simply prised
out of the Earth. There is also some evidence
to suggest that a hard greenish stone known
as dolerite was used in order to detach
the stone from its base. In order to get
to the higher quality rock they would light
fires on the granite to get it to a certain
temperature. Cold water would then be thrown
on it to cool it fast this would cause the
outer layers to crack and fall off leaving
the harder rock from the inside for them
to use. In order to transport the huge rocks,
it is more than likely that the Egyptian
used manpower on a major scale.
If you are looking for a reputable company
manufacturing and supplying modern-day jaw
crushers then why not give N.H.Greaves &
Co Ltd. a ring on 01709 582381 and we will
be more than happy to oblige.
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