Abstract: Engineered soil covers are being evaluated under Canada's Mine Environment Neutral Drainage (MEND) program for their effectiveness in preventing and controlling acid generation in sulphidic mill tailings. A critical parameter ...

Abstract: The oxygen decay coefficient is a key parameter used to predict the distribution of oxygen concentrations spatially and temporally in a waste rock pile. The present study proposes a new equation to calculate the oxygen ...

Abstract: The interactions between acid mine drainage (AMD) and three tropical clayey soils have been studied through hydraulic conductivity and batch sorption/dissolution testing. After 19–24 pore volumes of AMD flow through the ...

Abstract: In this paper a rocket motor turbine-pump reduction gear system is analyzed in regard to Hertzian gear tooth contact stresses and times of contact. It is found that the Hertzian contact ...

Abstract: Three tropical soils from Ghana, West Africa, were investigated in the laboratory for their potential as liners for waste containment. The key characteristic evaluated was the impact of municipal solid waste landfill ...

Abstract: The vertical flow of water in cover soils is simulated using published analytical and finite-element methods. The two methods gave virtually identical pressure head and water content profiles during steady infiltration of ...

Abstract: Shallow water covers are often implemented over sulphide-bearing mine tailings to reduce oxygen uptake by the tailings and, consequently, acid generation. At some sites, however, wind-induced waves could resuspend the ...

Abstract: The soil–water characteristic curve (SWCC) of fine-grained soils is usually determined experimentally. In the design of mine waste covers and landfill liners, the unsaturated hydraulic conductivity function,

Abstract: A series of stress-controlled and undrained cyclic triaxial tests were conducted on mine tailings to investigate their dynamic properties and the influence of clay mineral types on their cyclic strength. The tests were ...

Abstract: Disposal of pyritic mine tailings under shallow water covers is an effective and commonly used method for reducing tailings oxidation, thus minimizing the formation of acid rock drainage. However, wind-wave-induced ...