Trefor Owen, director of Forestry Commission Wales, believes the benefits of the scheme are significant.

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Railway watchdog chairman Trefor Roberts said he was grateful to the police for catching the "total idiots" who were walking along the railway line.

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Plaid said both Conservative economic spokesperson Dylan Jones Evans and Tory parliamentary candidate for Ynys Mon Trefor Jones had called for the service to be established.

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Pauline Annette Edwards, 68, from Buckley, Flintshire, was on holiday in Trefor, Gwynedd, when she was last seen at 1600 GMT on Friday 5 February 2010.

BBC: Open verdict on Pauline Annette Edwards missing in 2010

The inquiry also ruled that director Trefor Jones had lost his good repute as a director and as a transport manager, and David Hughes has lost his good repute as a transport manager.

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The hearing at Llangefni, Anglesey, was told grandmother Mrs Edwards, a retired shop assistant, had arrived with her husband John at their second home at Trefor but, after saying she was going for a walk, she disappeared.

BBC: Open verdict on Pauline Annette Edwards missing in 2010