King, Robert H.Strickland, William H.2022-05-242022-05-241990https://hdl.handle.net/11124/13216Includes bibliographical references.masters thesesengCopyright of the original work is retained by the author.Ultrasonic waves -- Industrial applicationsMining machineryMine haulageCharacterization of ultrasonic rangers for semi-autonomous operation of an underground load/haul/dump vehicleText