PROPELL

trailer and skid mounted equipment systems consisting primarily of blending and fracturing machinery for use in oil and natural gas extracting and processing and also including auxiliary power units for supplying electrical power, lighting apparatus and installations for vehicles, hydraulic controls for machines, and pumps and radiators for cooling motors and engines

cargo carriers and structural parts for vehicles, namely, vehicle mounted enclosures for machinery containment, crew quarters and command and control stations; fixed equipment carrying trailers, namely, semi trailer chassis with permanently mounted equipment; land vehicles, namely, fixed equipment carrying trucks