From: "roberta serface"
Sent: Monday, May 23, 2005 12:11 PM
Subject: Radon in Caves
I visited your website through Cavers Digest. What a wonderful experience! I
just wanted to let you know that we did a Radon Test in a northern Arizona
cave in 1994. It was 88 picocuries on the floor where the tester was located
at approx. -350' depth. Thereafter, we shortened the amount of trips and the
time we spent in-cave.
Glad you liked our website. I am assuming the Northern Arizona cave was in
limestone and not volcanic. If your 88 picocuries is equivalent to 88
Pci/L, it is very far above what we found in the only limestone cave we
tested (1.2 Pci/L). However, I don't know anything about equivalences of
different testing results and just reported what the local expert in that
field told me were the results.
If your results DO equal 88 Pci/L, I wonder if you have any idea why there
is so much radon gas there. We got a high result in one of the lava tubes
and figure this is due to cracks in the floor and a bed of granite (quite
radioactive in Saudi Arabia) underneath.
Do you know if anyone is compiling radon-in-caves info worldwide?