Feasibility of Using Large Tractor Dozers in the Surface Mining of Coal and the Reclamation of Mined Areas.
NTIS: Ad/a022-852 Available for Reference At Bureau Libraries :268 pages
Estimates of earthmoving efficiency and owning and operating costs were based on available data for existing smaller dozers. Currently used machines evaluated included seven tracked dozers and six wheeled dozers. The study was patterned after engineering models developed for evaluation of military ground vehicles. Three tracked and three wheeled larger dozer concepts were evaluated. Electric drive systems would supply power to electric motors at each sprocket or wheel. Other characteristics and dimensions were scaled up from existing machines. For equal operating conditions the large tractor dozer could increase earthmoving rates of currently available 500- to 700-hp dozers by an estimated 500 pct, and could reduce earthmoving costs from $0.02 to about $0.015 Per loose cubic yard moved 50 feet.
CP; Final Contract Report;
NTIS Accession No.
NTIS: Ad/a022-852 Available for Reference At Bureau Libraries
U.S. Army Engineers