Ged Benn has sent a bit more information for me to post here for him:
A chance meeting at our Annual Dinner at the weekend has clarified the
events surrounding the iron ladder. The two trips in 1984 were just
repair/reinforcement jobs on the original ladder. In 1993 we took new
sections of ladder down Bar and, as I remembered, we used them to enter
Wild Cat Rift before taking them through Short Hensler's and erecting
them. An amusing incident occurred (for us not him) when Pete Spillet
impaled himself when he abseiled onto the top of an upright section
which was hanging below him!!