By George W. Poling, Derek V. Ellis, James W. Murray, Timothy R. Parson, Clem A. Pelletier
This publication records the main broad examine ever at the use of deep sea tailing placement on the Island Copper Mine on Canada’s Vancouver Island. The examine tested all features of this leading edge software which applied four hundred million hundreds tailing solids, starting with its preliminary implementation in 1971 to 5 years after the mine’s closure in 1995. assurance contains placement application, engineering, chemical, organic, rate discount rates and environmental concerns. contains eight colour pages
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He served as president of Greenpeace for many years and has been an active environmentalist essentially all of his life. As an aside, although his predications of vertical mixing were periodically correct, his predictions of adverse biological impact were not. Moore has now acknowledged that, in retrospect, DSTP at ICM had the lowest environmental impact. In a paper published on his “Greenspirit” Web site in 2000, Moore and coauthors C. Pelletier and I. Horne concluded: “It is apparent from the findings of the monitoring program that the mine tailings were dispersed more widely then [sic] was originally predicted.
SELECTION OF SUBSEA TAILING PLACEMENT and assure construction of an emergency tailing impoundment with 6 months operating capacity. Utah Mining was also required to retain an independent scientific advisory committee to assist in establishing a comprehensive monitoring program, outlining procedures for sampling and establishing reliable analytical results, and preparing assessment reports for submission to the Pollution Control Branch. If the monitoring program indicated that unacceptable impacts were in fact occurring, the mine would have had to immediately divert tailings to the emergency tailing impoundment and then build alternate storage facilities.
In 1974 Utah Mining was asked to prepare an engineering report on an alternative scheme for an on-land tailing disposal facility. 2 million (Utah Construction and Mining, Ltd. 1975). Operating costs of such an on-land alternative would also have been much higher than the DSTP system because of the high cost of pumping an abrasive slurry up over a 110-m lift and over several kilometers of pipe length. In comparison, the tailings flowed downslope via gravity to the DSTP outfall. The most significant operating cost of the DSTP system was probably the oceanographic monitoring, evaluation, and reporting costs, which amounted to less than CDN $1 million/year.