The Design and Use of Novel Devices for Measuring Oxygen Flux Through Covers on Sulfidic Waste Rock

Timms. Greg P., ; Bennett, John W.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 9
Publication Date: Jan 1, 2000
A field-based method for measuring the diffusive oxygen flux through covers placed on sulfidic waste rock dumps has been developed and applied at a number of mine sites. The technique provides a means of quantifying oxidation rates in dumps and can thus be used to assess the effectiveness of cover systems. Two instruments can be used. The first is portable and easy to set up, enabling a picture to be built up of the overall diffusive flux into a dump by making measurements at a sufficient number of locations. The second is installed beneath a cover and is preferred in situations where oxygen is consumed in the cover since it provides a direct measurement of the oxygen flux into the underlying waste rock.
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