In reply to ianjdodd:
You wouldn't want to climbing in that place, its very loose.
As for access, its a bit dodgy as Chatsworth own the quarry and have had problems in the past.
From the DCA Handbook (Derbyshire Caving Association)
ELDON QUARRY:
Due to irresponsible vandalism to the tenants property, he has banned all access to the quarry, threatening legal action. Stay Away. Negotiations for access ongoing between DCA and the owners.