Abstract: A transportation cart configured to transport video projection screen cases comprises a base frame for supporting a video projection screen case; a plurality of ground engaging units for supporting the base frame from a ground surface; a containment frame located a distance above the base frame and connected thereto; and a first and second strap configured to secure cargo. The transportation cart is also configured to transport a plurality of multipurpose tables and comprises a base; a plurality of ground engaging units for supporting the base from a ground surface; a first and second vertical support extending up from the base.

Abstract: Polishing systems, subsystems and pads adapted for use in conjunction with a polisher. A relatively incompressible backing pad is configured to be attached to a drive system of the polisher. The backing pad includes at least one substantially straight backing pad edge along a perimeter thereof. A relatively compressible polishing pad is configured to be attached to the backing pad, to be driven in contact with a surface to be polished. The polishing pad includes at least one substantially straight polishing pad edge along a perimeter thereof corresponding to the at least one substantially straight backing pad edge when the polishing pad is attached to the backing pad.