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Severn barrage: the debate continues

I do not understand the superficial mis-information in John McKenna's piece that tidal lagoons are 'circular concrete coffer dam structures... more expensive to build than a barrage'.
The promoters of the pilot project in Swansea Bay, Tidal Electric, supported by a feasibility report from WS Atkins, have made it quite clear that lagoons would be constructed from rock, sand and gravel.

A lagoon would be considerably less expensive than an equivalent tidal barrage. The Atkins' report is available on the Tidal Electric web site.

The Sustainable Development Commission report recommended that a tidal lagoon pilot should proceed in parallel with the review of the Severn Barrage project.

Let's get on with both. Either way, we might avoid some or all of the nuclear options.

BRIAN A CHEETHAM (M), Brian Cheetham Partnership, 51 Wallace Fields, Epsom, Surrey, KT17 3AX

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