Composite tailings (CT), an engineered, alkaline, saline mixture of oil sands tailings (FFT), processed sand and gypsum (CaSO4; 1 kg CaSO4 per m(3) FFT) are used as a dry reclamation strategy in the Alberta Oil Sands Region (AOSR). It is estimated that 9.6 × 10(8) m(3) of CT are either in, or awaiting emplacement in surface pits within the AOSR, highlighting their potential global importance in...

The objective of BASELINE is to publish short communications on different aspects of pollution of the marine environment. Only those papers which clearly identify the quality of the data will be considered for publication. Contributors to Baseline should refer to 'Baseline—The New Format and Content' (Mar. Effective metal concentrations in porewater and seawater labile metal concentrations asso...

Midterm congressional elections provide an interesting testing ground for theories of voting and elections in America. Free from the contamination of national personalities and stylized issues that epitomize presidential campaigns, midterm elections provide a cleaner issue environment for investigating the effects of systematic short-term forces on congressional elections. The seemingly inevita...

To explore the relationship between total cyanide and easily liberatable in tailings its impact on environment, leaching release characteristics of a pond were studied using dynamic experiment, model was established. The results show that concentration is higher than cyanide. With increase time, more sensitive to intensity. first-order kinetic, second-order modified Elovich, double constant, pa...

Abstract In this paper, a qualitative safety analysis of the Żelazny Most tailings pond is addressed. This object one largest facilities type in world being crucial element technological line copper production KGHM Polska Miedź S.A. The assessment effectiveness two types preventive measures, i.e., relief wells and loading berms, investigated based on displacement stability 2D cross-sections tec...

Mining typically involves extensive areas where environmental monitoring is spatially sporadic. New remote sensing techniques and platforms such as Structure from Motion (SfM) and unmanned aerial vehicles (UAVs) may offer one solution for more comprehensive and spatially continuous measurements. We conducted UAV campaigns in three consecutive summers (2015–2017) at a sub-Arctic mining site wher...

Wind erosion, transport and deposition of windblown dust from anthropogenic sources, such as mine tailings impoundments, can have significant effects on the surrounding environment. The lack of vegetation and the vertical protrusion of the mine tailings above the neighboring terrain make the tailings susceptible to wind erosion. Modeling the erosion, transport and deposition of particulate matt...

The disposal of sulfide mine tailings in an environmentally sound, yet cost-effective, manner is an issue facing most metal mines. Subaqueous tailing disposal is considered an attractive option for disposal that limits oxygen (O2) availability within sulfide mine tailings and controlling sulfide oxidation and the resultant acid mine drainage (AMD). Assuming that O2 profiles represent steady-sta...

Naphthenic acids (NAs) are natural constituents in many petroleum sources, including bitumen in the oil sands of Northern Alberta, Canada. Bitumen extraction processes produce tailings waters that cannot be discharged to the environment because NAs are acutely toxic to aquatic species. However, aerobic biodegradation reduces the toxic character of NAs. In this study, four commercial NAs and the...