Results 111 to 120 of about 16,888 (165)

Strategy for Radioactive Waste Disposal in Crystalline Rocks

Science, 1981
A strategy for waste disposal is proposed in which the repository would be situated in a crystalline rock mass beneath a blanket of sedimentary rocks whose ground-water flow characteristics are well understood. Such an approach exemplifies the concept of multiple barriers to the isolation of radioactive wastes from the biosphere.
J D, Bredehoeft, T, Maini
openaire   +2 more sources

The Diavik waste rock project: Water flow through mine waste rock in a permafrost terrain

Applied Geochemistry, 2013
Abstract A field experiment is being carried out at the Diavik diamond mine in northern Canada to investigate the influence of unsaturated flow behavior on the quality of drainage from mine waste rock piles in a region of continuous permafrost. This paper is part of a series describing processes affecting the weathering of waste rock and transport of
Matthew Neuner, Leslie Smith, David W. Blowes, David C. Sego, Lianna J.D. Smith, Nathan Fretz, Michael Gupton   +6 more
openaire   +1 more source

Molybdenum and zinc stable isotope variation in mining waste rock drainage and waste rock at the Antamina mine, Peru

Science of The Total Environment, 2016
The stable isotope composition of molybdenum (Mo) and zinc (Zn) in mine wastes at the Antamina Copper-Zn-Mo mine, Peru, was characterized to investigate whether isotopic variation of these elements indicated metal attenuation processes in mine drainage. Waste rock and ore minerals were analyzed to identify the isotopic composition of Mo and Zn sources,
E K, Skierszkan, K U, Mayer, D, Weis, R D, Beckie   +3 more
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Diavik waste rock project : thermal transport in a covered waste rock test pile

2011
Covers are widely used in the management of mine tailings and waste rock and most current cover designs and constructions are in temperate regions. However in cold regions, certain features and processes are unique and they can be utilized to reduce the production of acid rock drainage (ARD).
Pham, Nam, Sego, David, Blowes, David, Amos, Richard, Smith, Leslie   +4 more
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The Diavik Waste Rock Project: Design, construction, and instrumentation of field-scale experimental waste-rock piles

Applied Geochemistry, 2013
The physicochemical processes that affect acid mine drainage (AMD) in unsaturated waste rock piles and the capabilities of small-scale laboratory experiments to predict AMD from waste rock are not well understood. An integrated laboratory and field study to measure and compare low sulfide waste rock and drainage characteristics at various scales has ...
Lianna J.D. Smith, Michael C. Moncur, Matthew Neuner, Michael Gupton, David W. Blowes, Leslie Smith, David C. Sego   +6 more
openaire   +1 more source

The Diavik Waste Rock Project: Measurement of the thermal regime of a waste-rock test pile in a permafrost environment

Applied Geochemistry, 2013
Abstract The interior thermal regime of a field-scale experimental waste rock pile in the Northwest Territories, Canada, was studied. Test pile construction was completed in the summer 2006, and temperature data was collected continuously since that time to February 2009. The temperature data indicates the test pile cooled over the study period, with
Nam H. Pham, David C. Sego, Lukas U. Arenson, David W. Blowes, Richard T. Amos, Leslie Smith   +5 more
openaire   +1 more source

Waste Rock Biogeochemistry in a Permafrost Environment: Examination of a Cover Design for a Low-Sulfide, Granitic Waste Rock

Geomicrobiology Journal, 2017
ABSTRACTAt the Diavik Waste Rock Project's mine-research site, the microbial colonization and oxidation of waste rock sulfide minerals are attenuated by the extreme freeze-thaw cycle of a permafrost environment. The closure design for the waste rock stockpile consists of a low-sulfide waste rock and low-permeability till, covering a relatively higher ...
Jeff B. Langman, Harish Veeramani, David W. Blowes, Brenda Bailey, David Wilson, Leslie Smith, David C. Sego, Rich T. Amos, Steven P. Holland   +8 more
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The Diavik waste rock project: Initial geochemical response from a low sulfide waste rock pile

Applied Geochemistry, 2013
Abstract Three large-scale experimental waste rock piles (test piles) were constructed and instrumented at the Diavik Diamond Mine in the Northwest Territories, Canada, as part of an integrated field and laboratory study to measure and compare physical and geochemical characteristics of experimental, low sulfide waste rock piles at various scales ...
Lianna J.D. Smith, Brenda L. Bailey, David W. Blowes, John L. Jambor, Leslie Smith, David C. Sego   +5 more
openaire   +1 more source

The Diavik Waste Rock Project: Particle size distribution and sulfur characteristics of low-sulfide waste rock

Applied Geochemistry, 2013
Three large-scale instrumented waste rock piles were constructed at the Diavik Diamond Mine in the Northwest Territories, Canada. These experimental waste rock piles (test piles) are 15 m high and are part of an integrated field and laboratory research program to characterize and compare low-sulfide waste rock and drainage at various scales.
Lianna J.D Smith, David W. Blowes, John L. Jambor, Leslie Smith, David C. Sego, Matthew Neuner   +5 more
openaire   +1 more source

Concepts for Co-Mixing of Tailings and Waste Rock

2003
The co-mixing of tailings and waste rock involves the intimate blending of tailings and waste rock to create a new material (Co-Mix) with superior physical and hydraulic properties. The new material has a low hydraulic conductivity, low compressibility, high water retaining capacity and high shear strength.
Wilson, G.W., Plewes, H.D., Williams, D.J., Robertson, J.   +3 more
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