Roubidoux Progress by Chris Hill
What do you do when rain spoils cave diving? Chris Hill, member of the OCDA, writes about the perks of mine diving in his article “Midwest Mine Diving” published in Underwater Speleology: Journal of the Cave Diving Section of the National Speleological Society Vol. 39 Number 2.
http://www.nsscds.org/files/uws39vol2web.pdf