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- 154University of Alberta Libraries Licensed Resources/Sixth International Conference on Acid Rock Drainage
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2003-01-01
Ayres, B., Dirom, G., Christensen, D., Januszewski, S., O’Kane, M.
Four field test plots were constructed in 1998 on a sloped waste rock surface at the Myra Falls Operations of Boliden Westmin (Canada) Limited to evaluate hydraulic performance of alternate cover system designs. The field test plot cover systems were designed to control oxygen ingress and water...
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2003
Milczarek, M., Yao, Tzung-mow, Vinson, J., Word, J., Kiessling, S., Musser, B., Mohr, R.
Properly designed evapotranspirative (ET) cover systems can greatly reduce the amount of infiltration and groundwater recharge (deep percolation) into potential acid generating mine waste. In arid and semi-arid environments, infrequent precipitation, low measurable subsurface fluxes, spatial...
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2003
Ludgate, I., Coggan, A., Davé, N. K.
The performance of in situ, shallow water covers in controlling acid generation was evaluated at four recently decommissioned pyritic uranium tailings sites at Elliot Lake, Ontario, Canada. The tailings are acid generating, having a pyrite content of approximately five to ten per cent and a very...
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2003
Vertical flow systems (SAPS, vertical flow wetlands) are increasingly used for passive treatment of mine drainage that is net acid. Data on 30 systems in eastern US show that well designed systems typically add about 40 g/d/m2 of alkalinity to influent net acid water. If they are designed with a...
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2003
Hauff, P. L., Peters, D. C., Sares, M. A., Coulter, D. W., Bird, D., Prosh, E., Henderson III, F. B., Kuyucak, N., Chávez, J., Rosa del Castillo, J., Ruiz, J.
This presentation discusses NASA-funded research on the ability of hyperspectral remote sensing to map diagnostic acid rock drainage (ARD) mineralogy that adversely affects water quality within a watershed and to determine the relative contributions of natural ARD sources of metals and acidity to...
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2003
Zaluski, M. H., Trudnowski, J. M., Harrington-Baker, M. A., Bless, D. R.
Sulfate-reducing bacteria (SRB) have the ability to immobilise dissolved metals by precipitating them as sulfides, provided that a favourable biochemical environment is created. Such an environment includes the presence of sulfate, anaerobic conditions and the availability of organic carbon. If...
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2003
Measurement of the net percolation from the base of a cover system into the underlying waste material is a key component of a cover system monitoring program. The units of measure (ie a percentage of precipitation or rainfall) are simple to understand for all stakeholders, which increases the...
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2003-01-01
Carlson, C. P., Gotkowitz, M. B., Feinstein, D. T.
In Wisconsin, state laws and regulations governing metallic mine permitting stipulate that protection of groundwater quality be assured indefinitely through all phases of the mining project, including development, active mining, reclamation, and long-term closure. By rule, the Wisconsin...
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2003-01-01
Koehnken, L., Clarke, N., Dineen, R., Jones, W.
The Mt Lyell copper mine in western Tasmania has discharged acid drainage (AD) into the Queen and King Rivers and Macquarie Harbour for over a century. Presently, dissolved copper loads of about 1000 tonnes per annum and dissolved aluminium loads of >2000 tonnes per annum are contained in the AD,...
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2003
The Ekati Diamond Mine is located on permafrost terrain in Canada’s Northwest Territories. The mine rock consists of: 1. diamond-bearing and barren kimberlite; and 2. surrounding waste rock such as granite. The kimberlite occurs in several vertical ‘pipes’ that are, or will be, mined using open...