Sirius Minerals - Re: SXX Stream Log - Again Boulby has large trunk...

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19:28 25/03/2014

Again Boulby has large trunk conveyors, up to 10km in length (as did Selby), the proposal is not for one long conveyor but a series of smaller conveyors. Tunneling machines being the same as in brunels days is complete poppycock - yes conventional shield tunneling may be, TBM's are a very different piece of equipment, utilising a shield. The long term operating costs of the conveyor system will be far cheaper than a pumped sytem, wear and corrosion in pumping a alkaline, high solid content salt solution will be massive, with the pipes furring up over a period of time. Then you have the dewatering issues at the other end (Which uses a massive amount of energy) as well as the energy sed in actually pumping.

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