Ramsden Shaft at Bog Mine, Shropshire was constructed c1914/15 and lined
with precast, shaped concrete blocks, said locally to be 33 to the circle (I
haven't yet counted them). The shaft is about 117 m deep and lined
throughout its depth. As far as I aware this is the only such shaft in the
south west Shropshire metalliferous mining area (though Milne Shaft on Leigh
Level also dug by Shropshire Mines Ltd a year or so later could well be the
same). The rock is hard enough that full lining is very unlikely to have
been a necessity. Does anyone on the list have any knowledge of concrete
lined shafts of this sort of date or of the site batching plant which would
have been needed to produce them. Sir John Ramsden, the company MD had
Huddersfield connections, could this be coal mining technology?
Thanks in advance
Mike Shaw
|