PeterGray wrote:However, I'm not entirely sure how that will compare in energy saving terms to the solution that's been in use in mines and canals for a long time where transporting materials downhill - have an up and a down incline/tramway connected, so filling a car at the top brings up the other.
This isn't within the mine - this is for the journey taking 34,000 tonnes of iron ore in a train to the coast. Kinda hard to have a permanent linkage over that kind of distance.