The latest Bardon Quarry extension path order was confirmed on 5th August 2016, and the map below shows, what we believe, to be the current situation regarding rights of way in the immediate vicinity of the quarry.
Green should be usable, red either temporarily or permanently stopped up. Blue is the temporary route of the Ivanhoe Way. Purple (now we are taxing my colour recognition) shows unaffected paths.
We think this shows the maximum disruption, and further changes will be positive. Unfortunately we were unable to obtain a safe route to Copt Oak in spite of our best efforts.

Bardon Quarry path changes
It would be nice to hope that a map could be placed at strategic points in the area.