I like many others on this site who knew Paul will be very sad at this news.
I feel very privileged to have spent many hours with Paul in caves in South Wales and Derbyshire, and mines all over the UK, I have like many assisted in the taking and appearing in countless of his 'snaps'.
IMHO the legend that was Paul will live long. If there was a hall of fame, for cavers, mine explorers, and photographers, Paul would be a member of each. So sad ...
If it can't be grown it has to be mined.