Unlike with most iron mining, sulfide mining pit-lakes can be highly contaminated water bodies, with acid and metal leaching occurring along the pit walls. Unsuspecting migratory waterfowl and other wildlife may use the pit-lakes as resting places or water sources, and become poisoned.
There is no ore dust or direct ore exposure to the environment and a lower consumption of water is needed in the mining process (International Atomic Energy Agency [IAEA], 2005). However, the strong acids used to dissolve the ore body commonly dissolve metals in the host rock as well.
Acid mine drainage (AMD) is metal-rich, acidic water that is the result of water from mining activities flowing over or through rocks containing pyrite, a sulfur bearing mineral. This water reacts with pyrite and air to form sulfuric acid and dissolved iron.
mining and waste dump areas is the major source of An empirical equation has been used for pollution of surface water bodies with excess silt, assessment of peak particle velocity (PPV) values at turbid particles (colloidal matter) and soluble iron nearby locations.
Iron and Water is Grant J. Merritt's memoir of his life's work on behalf of Minnesota's people and environment and also the story of a significant family in state history. Merritt's family played a key role in the struggle over natural resources in Minnesota—for the enrichment of mining pioneers, the prosperity of the state and its ...