North Yorkshire Moors Railway General Discussion

But, what really matters is how many passengers its use prevent from walking away - unfortunately, a metric that is very hard to measure.....

 

Grosmont coaling tower was largely built in house under the direction of Peter Smeaton. It is a valuable piece of kit; locos can receive several tons of coal in less than a minute, whereas coaling a tender with a bucket loader is a time consuming job. It comes into its own with tank locos that have to come on shed for a top up during the day as it has a minimal effect on the T/T. Although operation of the tower is usually done by the duty fitter, if needs be the crew can do the job.

 

The tender as converted to carry oil.
There isn't much available data for cold pressed oil consumption, however comparable oil data and the bulk cp rapeseed prices suggest a cost per mile considerably more than your quoted figure, as I understand it future resilience and summer use are the justification rather than pure cost per mile. Standard heavy fuel is cheaper.
NYMR conundrum as ever.