Chats With the Pioneers #30 Polymetrics Pioneers – Jim Sleigh, Michael Nelson, and Walter Hayden Podcast – Full Version https://www.amtaorg.com/podcast-player/25105/chats-with-the-pioneers-30.wav Podcast – Edited Version https://www.amtaorg.com/podcast-player/26185/chats-with-the-pioneers-30-edited.wav 09/23/13