http://divingalmanac.com/papin-designs-surface-supplied-diving-bell/ First published in 2007, the Diving Almanac celebrates the achievements of a unique group of people that share a passion for underwater adventure and discovery. It is the ultimate authority on diving exploits, history and personalities. Mon, 20 Aug 2018 04:10:30 +0000 hourly 1 https://wordpress.org/?v=4.9.8