, Ditch Witch, CMW, AutoCrowd, Modularmatic, Jet Trac, Roto Witch, Subsite, Fluid Miser, Sidekick, Perma-Soil, Power Pipe, Super Witch, Super Witch II, Pierce Airrow, and The Underground are registered trademarks of The Charles Machine Works, Inc. The Underground Authority Worldwide is a pending trademark of The Charles Machine Works, Inc. 4 RT115 Tier 2 - FOREWORD by The Charles Machine Works, Inc., Issue Number 1.1/OP-12/03 Operator’s Manual Part Number 054-116 Perry, Oklahoma RT115 Tier 2 Copyright 2003 p