Arnowitt-Deser-Misner energy

An apparatus for pneumatically conveying granular material such as gravel. The apparatus includes a vehicle base mounting plate, a prime mover such as a diesel engine, a hydraulically driven air blower, a hopper for receiving gravel to be conveyed, and a hydraulically driven auger assembly for moving gravel from the hopper to a pneumatic pick-up point. After pneumatic pickup, the gravel is transported through an extended network of suitable pneumatic tubing such as low friction, thick wall, PVC pipe sections, to a desired discharge location, where the material is discharged into a catch can for downward placement at a desired point. In a preferred embodiment, the auger assembly comprises a three piece unit, with a shaft, an inner auger section, and an outer auger section. The outer auger section is a replaceable wear part which can be repaired, rebuilt, or replaced as necessary due to frictional wear on the auger due to contact with the solid being conveyed. In an alternate configuration, a vertically oriented auger is provided to directly feed material to be conveyed into a pneumatic uptake tube. Preferably, the pneumatic uptake tube is manually reversable so that material can be discharged out either side of the vehicle, to enable the equipment to conveniently be deployed in narrow streets or other restricted work sites.