In reply to PontiusPirate: I know this because I work for Hanson who own the quarry and was involved in the initial discussions with Dave Musgrove back in February 2009, when access was denied. The Company's view has not changed and does not want climbing to take place in the quarry.
The climbers who have bolted the routes know that access is not permitted and are trying to keep the information quiet.
Fellow Yorkshire climbers informed me that it was now being climbed on.