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This article originally provided by
The Williamson Daily News
February 16, 2006
Ponds Threaten Appalachia
(EDITOR'S NOTE: This is the first of a 2-part series on the on
coal impoundment dams located in the area.)
LOBATA - There are at least 12 communities in Mingo County that have
coal slurry impoundments located above them, according to official
sources.
Many local residents are probably unaware, that the dams holding
back billions of gallons of coal sludge, or that the impoundments
even exist.
Regardless, many environmentalists and other experts believe that
citizens of Appalachia still face the threat of spills and other
impoundment failures.
Some of these coal impoundments in Mingo County are near Rawl,
Ragland, Bias, Kermit, Thacker, Lobata and Dingess.
Two large impoundments are located on Ben Creek in Mingo County.
Of course the most recent breach was on Oct. 11, 2000, when Martin
County Coal Corporations coal waste impoundment broke through and
released 250 million gallons of slurry into a subsidiary of the Tug
Fork River near Warfield, Ky. and Kermit, W.Va., which buried parts
of the community under 7 feet of coal sludge. It eventually bleed
into the Big Sandy and Ohio Rivers.
During that spill approximately 1.6 million fish were killed.
Over 27,000 people had their public and private water supplies
contaminated, according to Jack Spadaro, a former inspector for the
U.S. Mine Safety and Health Administration (MSHA).
Spadaro says that about 225 of the coal slurry impoundments are
sitting on top of abandoned underground mine workings where the
potential for additional breaks, such as took place in Martin
County.
The former mine inspector said that in October of 2000 he was asked
by the Assistant Secretary of Labor for Mine Safety to participate
in an investigation into the Martin County slurry spill.
These impoundments are built after waste is created during the
process of cleaning coal and must be permanently disposed of in a
man-made facility, usually an earthen dam.
Larger materials such as rocks and pieces of coal are defined as
course refuse. Slurry, a combination of silt, dust, water, bits of
coal and clay particles is considered fine refuse, and is the most
commonly disposed of material held in impoundments.
Some impoundments are constructed using natural basins, but they are
often built up on an embankment at the mouth of a watershed. Then
they are reinforced with course refuse and are similar to a typical
dam.
After the waste is spilled into the basin, the coal particles settle
to the bottom, leaving the leftover water on top. Many times this
water is often recycled and used once again by the preparation plant
operations.
Other settling ponds are constructed nearby to catch the runoff of
excess water through a pumping system, and excess water from these
ponds is discharged into a local waterway.
The worst disaster from a slurry dam occurred in 1972 in nearby
Logan County on Buffalo Creek when 125 people drowned after an
impoundment burst.
Some engineers feel that undermining where an impoundment has been
built a few feet above a mine can weaken the ground beneath it,
causing it to seep through. This is considered a major risk for
failure.
Breakthroughs into underground mine workings have been the cause of
more recent catastrophic failures.
(To check on where coal slurry dams may be in your area, go to the
web-site
www.coalimpoundment.com.)
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