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Re: Todmorden Curve
Between Todmoden and Littleborough there is the Summit tunnel two and a half miles long.
It is not true however that passengers are likely to have the breath sucked from their lungs as the train rushed through the tunnel.
In 1841 big shafts were driven through the hill down to the tunnel to allow smoke from steam engines to escape.
This now serves as a safety valve to stop the back pressure which would have sucked the breath out of the people riding the train.
Good forward planning by Mr Stephenson.
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Gremlin R.T.
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