Simon Wilson said:
Someone said recently that there are more resin anchors on crags than there are in caves. Do you think there are more DMM Eco hangers on crags than in caves? There are about 2,500 in caves in the UK.
One key difference is 99% of the bolts underground see a prussicing load (or abseiling which could be higher for rapid deceleration). However with climbing, most never see more than the weight of a quickdraw and some rope drag.
As an engineer currently in my third year, they must have taken the bolt/anchor definitions quiz off the syllabus in recent years because when I say bolt in caving terms, I mean either Bolt with a capital 'B' or an anchor. This does seem to the be the vernacular on the streets.
As a climber I agree with Andrew, there's the 'placement' and 'anchor' (system of placements) nomenclature too...
I might specify it as bolt (resin), through-bolt, and spit. Calling a single point an 'anchor' for SRT makes me uncomfortable as it implies 100% trust. Though I'd call a sling around a tree, or a bomber nut an 'anchor' in climbing where appropriate though. Just a few thoughts.