Energy efficiency, surface-mining, scraper-ripper operation, dragline, energy input-output ratios
The normal criterion used to determine if a mining venture should be started or continued is its financial profitability. Energy efficiency is another criterion for dealing with public energy decisions. The energy efficiency ratios (output/input) of a large bulldozer, a scraper ripper, a small dragline, and a large dragline system were calculated for the Iowa Coal Project Demonstration Mine #1 (ICPDM #1) located between Oskaloosa and Bussey, Iowa. Even though the large dragline had the lowest cost and highest energy efficiency, it would not be used on this site without having other nearby sites available to allow long-term use.
Proceedings of the Iowa Academy of Science
© Copyright 1983 by the Iowa Academy of Science, Inc.
Colvin, T. S.; Marley, S. J.; and Anderson, C. E.
"Energy Efficiency Ratios of Surface Mining Systems for a Small Iowa Coal Mine,"
Proceedings of the Iowa Academy of Science: Vol. 90:
, Article 4.
Available at: http://scholarworks.uni.edu/pias/vol90/iss4/4