Thanks Mary - I knew I could rely on you. But you can cross it off the list now and focus on item 2 for someone else, because I now have what we were looking for. Just for the record, the full reference is:
Eyre J, The Safety Factor of Wire Rope. CRG Newsletter 117, September 1969, pp. 29-33.
(It's now also listed in the other topic I gave the link to above.)