Another interesting website to visit concerning the Fauld explosion is:-
http://www.carolyn.topmum.net/tutbury/fauld/fauldcrater.htm Being a schoolgirl and living in Derby at the time of the explosion (Monday, 27th November, 1944 at 11.11 a.m.) I clearly remember this event, we heard the bang and felt the blast as buildings shook, and wondered what on earth it could be. As news was heavily censored in those days (the closing days of the war, D.Day having happened on the 6th June, 1944) we only were told as much as the Government of the Day wanted the public to know, so never got the whole story until years later.
Locally it was known as the Dump and my mine exploration group did have a poke around the area in 1959 (the leader then living in Tutbury who knew the area well), but we didn't find anything, I have a couple of black and white photos of a collapsed level near the Dump which I will put up on AN. A few years later in the early 1960's PDMHS had an evening visit into the working Fauld gypsum mine, then owned by ICI, which we were lucky to get places on, and it was a very interesting trip.
Don't forget that bombs were also stored underground by the RAF at Harpur Hill, Buxton throughout the war, and Harpur Hill RAF station did not close until the 1950's. Nellie Kirkham told me that when she visited the Monyash/Taddington area during the war, there were hugh stacks of undetonated bombs stored on the grass verges all around that area, and she mentioned in particular the lanes around Lathkill Dale, Magpie and Horse Lane (which is part of the old Hassop/Newcastle-under-Lyne Turnpike that runs from Magpie to Monyash and was used for the transport of chert for use in the Potteries - Josiah Wedgewood being one of the partners of the Turnpike Trust).
Out of respect for the site, and also the possible danger of there still being unexploded bombs and ammunition, I would suggest it's best to leave the site along. Just my opinion, but say it was a sunken wreck that had been declared a grave, that wreck site would be left alone, similarly I think this site should also receive the same respect.