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Shaft of light required

Letters

Many civil engineers involved in the Scottish hydro projects of the 1950s and 60s are now retired and the proceedings of the ICE provide an excellent record of the design and implementation of these substantial works.

Surge shafts are common to the schemes and I am interested in the ways in which they were excavated requiring preliminary stope shafts, raised from the low and high pressure tunnels.

I should be pleased to hear from any of my contemporaries associated with surge shaft excavations so that a brief paper can be put together for the records.

W Arnold Barcroft (F), Waverley, Haslingden Road, Rossendale, Lancashire, BB4 6QX.

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