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MRF
> Environment >
Technical Issues > Acid Rock (Mine) Drainage
TECHNICAL ISSUES
ACID ROCK (MINE) DRAINAGE
Acid drainage is the result of the atmospheric oxidation
(i.e. by water, oxygen and carbon dioxide) of the relatively common
iron-sulphur minerals pyrite (FeS2) and pyrrhotite (FeS)
in the presence of bacteria (Thiobacillus ferrooxidans),
and any other products generated as a consequence of these oxidation
reactions. It results from natural events, and from the combination
of human activity (such as highway construction, mining, quarrying,
civil engineering works and logging) and natural events. It
is also called acid mine drainage (AMD) and acid rock drainage (ARD).
 More
information about the impact of acid drainage on the environment
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The International
Network for Acid Prevention (INAP) is a major initiative
by mining companies to combat acid drainage. Their website
has case studies contributed by members, and links to information
on the subject.
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Enviromine
has very detailed information
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MEND REPORTS AND MANUAL ARE NOW AVAILABLE ON CD-ROMS (MEND
Initiative - 09 August 2002) - The MEND initiative, a co-operative
research program that is directed by a partnership of the Canadian
mining industry, federal and provincial governments and non-government
organizations (NGOs), has produced about two-hundred technical
documents since the program started in 1989. These reports are
available in paper format from the MEND Secretariat in Ottawa.
To view the Table of Contents for each CD, please visit the
MEND Internet site at http://mend2000.nrcan.gc.ca
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Acid
Mine Drainage Experiments, Colorado School of Mines in Colorado.
Educational activities related to the topic of acid mine drainage
are designed to give students an appreciation of the scope of
this problem and a deeper understanding of the basic principles
that govern our natural world. These experiments provide students
with strategies to assess the impact of AMD and to minimize
this effect with preventive measures and effective clean-up
strategies.
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An overview on this site
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