Acid Mine Drainage

Author(s): 
Nereyda Loza, Osvaldo Aduvire
Category: 
Geochemistry
Many times the quality of a treated effluent from a mining operation does not comply with the required legislation as in the case of Peru, where Maximum Permissible Limits for mining operations are not met due to the content of metals such as manganese, which usually
Author(s): 
A Watson, C Linklater, J Chapman and R Marton
Category: 
Geochemistry

Closure options under consideration at some iron ore mine sites in Western Australia include backfilling with mineralised and/or non-mineralised waste rock. Post-closure, following groundwater rebound, flow-through conditions may develop in the backfill located within the saturated zone below Read more... about Weathered Sulfidic Waste – Laboratory-Scale Tests for Assessing Water Quality in Backfilled Pits

Author(s): 
Andrew Garvie and Danny Kentwell
Category: 
Geochemistry

The number and distribution of waste rock samples geochemically characterised before and during mine operation impacts the ability to accurately represent the waste characteristics and to predict the potential for acid and metalliferous drainage (AMD). Numerous regulatory and industry bodies Read more... about The Influence of Sample Numbers and Distribution on the Assessment of AMD Potential

Author(s): 
C Linklater, A Watson, A Hendry, J Crosbie and P Defferrard
Category: 
Geochemistry

The Century open cut zinc mine at Lawn Hill recently changed ownership from MMG Limited (MMG) to New Century Resources (NCR). Closure planning for the site was initiated by Zinifex, developed further by MMG, and is continuing under the new ownership. The waste rock dumps will be covered with a Read more... about Pit Lake Water Quality Modelling at Century Mine

Author(s): 
Osvaldo Aduvire
Category: 
Water Management

Characterization of acid mine water by acidity helps us explore possibilities for recovering by-products with economic value and choosing the most suitable and efficient treatment system possible. This is because characterization by acidity allows us to ascertain not only protonic acidity, but Read more... about Acid Mine Water Treatment With Recovery Of By-Products Of Economic Value

Author(s): 
Alison Hendry, Claire Linklater, Russell Staines and John Chapman
Category: 
Geochemistry

Using drillhole assay data to assess the risk of acid and metalliferous drainage (AMD) early in the planning of a mining operation can have a number of benefits.  These include:

  • Early identification of operational and closure AMD risks;
  • Optimisation of geochemical
Author(s): 
Danny Kentwell, Andrew Garvie and John Chapman
Category: 
Geochemistry
 
To assess the risk of acid and metalliferous mine drainage (AMD), most new mining projects require an initial assessment of the locations and volumes of potentially acid forming (PAF) waste that is likely to be moved and dumped in waste stockpiles. This requires sampling of
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