As well as being the oracle of Peak District mining history and mining law, Jim was also a very active caver in his younger days and was a member of both the Sheffield Caving Club and the Orpheus back in the 1950s, and founded PDMHS in 1959 along with Mike Smith and Bill Sarjeant. I'll miss him greatly, I used to joke to my wife that there was no such thing as a short phone call to Jim as we'd find ourselves discussing so many things!