No. But I know a man who has. Many times. PM me if you want his details.
You could also speak to Tony Jarrett at Bat Products since he was on most of the same exeditions as my mate
Well the best part about this year's NSS Convention would be the caving on Vancouver Island in Canada... and you can do that anytime, sans convention...
...ah, it's just occurred to me that MY e-mail has changed as well. Can you let Jrat know I'm now at lynnian@shaw.ca .