Clay-kicking
Clay-kicking was a method of civilian mining that was used in cities to aid
in the installation of utilities such as elcectric cables and water pipes
and also use in the driving of drainage systems and sewer works. the miner
sat in a small gallery or tunnel with his back supported by a wooden cross
(which also explains why it was also know as "working on the cross") and
used an implement similar to a spade but with a much smaller, thinner blade
and was referred to as a grafting tool (see illustration below). Above the
head of the grafting tool were situated two foot rests which the miner used
to push the tool into the clay face. It derived its name due to the fact
that the subsoil of most towns and cities in the uk are, more often than
not, made up of clay and the movements made by the miner in carrying out
this work resembled a kicking motion.
The main difference between military and civil mining, which is described
in some detail by W. Grant Grieve
(1), is the
type of gallery created. In civil mining the gallery is all important as
this is where the minerals are extracted. they must, therefore, be large
enought to allow several men at any one time to work and move the minerals
over considerable distances by rail trucks to the surface. In military mining
the gallery is simply a 'means to an end' in that the objective is to reach
the enemy position and place an explosive charge underneath him. The size
of the gallery in this instance is usually only of dimentions that will allow
the work to be carried out quickly and efficiently.
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(1) Grant Grieve, W and Newman, B. Tunnellers. P. 32-33.