The Durham connection was from a thread on Jiscmail posted around 2005 by Peter Claughton. Might be a red herring, but he seems a reliable source.
I had another look at the Hazard Pit photo and now realise that its 2 superimposed headstocks, and that the newer one with the straight legs is a good fit with GR. I'd say that GR is somewhat taller, but if additional steelwork was put in to elevate the whole, then it would be an even closer match.
The sheave platform appears to have a projection on it. Would be interesting to see if traces of this remain at GR. A better look at the main steelwork might also point to a production date.
Mark - 1965 seems a believable date for its relocation at GR, based on yours cited, and other old photos from that era.
Durham or Northumberland are (in my mind) likely candidates as there were numerous smaller, shallower mines around that time, as opposed to the deep coastal pits. The winder in Burtree Pasture came from Kimblesworth, that at Redburn from Tanfield, clearly there was no shortage of gear in those days!
Mark