William Stone — American Explorer born on December 07, 1952,
William, Billy or Bill Stone may refer to:.. (wikipedia)
Cave divers, of course, deal with an elevated level of risk, and the most that I can say here is that we tend to conduct our work at the bottom of a deep cave on an extremely conservative basis with heavy levels of backup equipment and a policy to abort if any single person doesn't like the situation underwater at any time during the mission.
