Thomas Grinding, Inc. - Makers of premium rumble strip and stump .Manufacturer of some of the best Rumble Strip and Stump Grinders on the Market since 1993. . Turns Your Skid Steer Into A Rumble Strip Grinding Machine.kantini strip grinding machine,TGI TR2000SC rumble strip grinderMay 18, 2011 . The TGI TR2000SC rumble strip grinding machine is a self-contained grinding machine . It is manufactured in Moore Haven, Fl. USA.