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British Columbia Mine Reclamation Symposium
Mt. Washington reclamation : a critical review Rennie, Clifford C.
Abstract
All mine reclamation programs should be under constant critical review in order to have most effective reclamation at minimum cost. Experiments should be identified as experiments. Ineffective reclamation results in negative perceptions of the mining industry's ability to control wastes. This paper critically reviews Mt. Washington reclamation to date, examines alternative solutions and makes recommendations for future control. Mt. Washington Copper Co. Ltd. milled 392,000 tons of 1.16% Cu ore in 1964-67 from two pits and dumped approximately the same amount of waste rock in two main areas. Copper bearing acid water drains from the north pit area into Pyrrhotite Creek which eventually flows into the Tsolum River. Reductions in fish stocks in the Tsolum River have been blamed on the water quality. Reclamation by the Ministry of Energy, Mines and Petroleum Resources to date has been a two year program of dump restructuring with clay capping, followed by two seasons of experimental bedrock cleaning and capping tests. To date no substantial improvement has been made in water quality. Alternative solutions such as neutralization in place or downstream will be examined.
Item Metadata
Title |
Mt. Washington reclamation : a critical review
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Creator | |
Contributor | |
Date Issued |
1992
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Description |
All mine reclamation programs should be under constant
critical review in order to have most effective reclamation at
minimum cost. Experiments should be identified as experiments.
Ineffective reclamation results in negative perceptions of the
mining industry's ability to control wastes. This paper critically
reviews Mt. Washington reclamation to date, examines alternative
solutions and makes recommendations for future control.
Mt. Washington Copper Co. Ltd. milled 392,000 tons of 1.16% Cu
ore in 1964-67 from two pits and dumped approximately the same
amount of waste rock in two main areas. Copper bearing acid water
drains from the north pit area into Pyrrhotite Creek which
eventually flows into the Tsolum River. Reductions in fish stocks
in the Tsolum River have been blamed on the water quality.
Reclamation by the Ministry of Energy, Mines and Petroleum
Resources to date has been a two year program of dump restructuring
with clay capping, followed by two seasons of experimental bedrock
cleaning and capping tests. To date no substantial improvement has
been made in water quality.
Alternative solutions such as neutralization in place or
downstream will be examined.
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Extent |
307173 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-08-27
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0042203
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Other
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Copyright Holder |
British Columbia Technical and Research Committee on Reclamation
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International