Chats With the Pioneers #19 DuPont Permasep Pioneer – Dave Stahlhut, with Baldwin Lima Hamilton Pioneer – Sherman May Podcast – Full Version https://www.amtaorg.com/podcast-player/25082/chats-with-the-pioneers-19.wav Podcast – Edited Version https://www.amtaorg.com/podcast-player/25899/chats-with-the-pioneers-19-edited.wav 10/31/12