What ever happened to making a simple joke.
Graham I wasn't serious.
Yours in birding,
Grant Brosie
--- Graham Turner <> wrote:
> I'n not drinking that.
>
> "All forms of mining are likely to generate areas
> where coal is stacked and
> where the coal has significant sulphur content, such
> coal heaps generate
> highly acidic, metal-laden drainage when exposed to
> rainfall. These liquors
> can cause severe environmental damage to receiving
> water-courses. Coal
> mining releases approximately twenty toxic release
> chemicals, of which 85%
> is said to be managed on site. In modern mining,
> operations must, under
> federal and state law, meet standards for protecting
> surface and ground
> waters from contamination, including acid mine
> drainage (AMD). To mitigate
> these problems, water is continuously monitored at
> coal mines. The five
> principal technologies used to control water flow at
> mine sites are:
> diversion systems, containment ponds, groundwater
> pumping systems,
> subsurface drainage systems, and subsurface
> barriers. In the case of AMD,
> contaminated water is generally pumped to a
> treatment facility that
> neutralizes the contaminants. Still, AMD remains a
> large problem, emanating
> from coal mines abandoned in the United States prior
> to SMCRA."
> From Wikipedia, where else.
>
>
>
> Graham
>
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