Facts can't be copyrighted but data collected (such as measurements of pitch lengths) can be (I think)...
Anyway this is all irrelevant, because I am absolutely delighted to say that after speaking with the CNCC Technical Group (who have put a huge amount of work, time and personal finance into the CNCC resin anchor scheme over the last few decades), they have offered for the rigging topos from Northern Caving (formerly the CNCC Rigging Guides) to be made available electronically as part of these cave descriptions on the CNCC website.
This is fantastic news and I am extremely grateful to the CNCC Technical Group team for making this possible.
It will take a little while to get these topos and the descriptions available online and so I would continue to recommend the book Northern Caving; even though the topos in here will become electronically available over the next six months, it is still a beautiful book; useful to have as a hard copy for easy, quick, or inspirational browsing (and an essential piece of literature for any club library), and it contains lots of additional information which will not be incorporated into the electronic guides.
Matt Ewles
Secretary, Council of Northern Caving Clubs