Everything about Coal Slurry Impoundment totally explained
A
coal slurry impoundment consists of solid and liquid
waste and is a
by-product of the
coal mining and preparation processes.
Mining generates enormous amounts of
solid waste in the form of rocks and dirt. This refuse is used to
dam the opening of a between adjacent mountains.
After the dam is built, the void behind it's typically filled with millions of gallons of
waste slurry from a
coal preparation plant. This impounded liquid waste can sometimes total billions of gallons in a single facility.
High-profile
disasters associated with these slurry impoundments have called into question their safety. In 1972, a slurry impoundment outside of
Logan County, West Virginia burst (see
Buffalo Creek Flood); resulting in a rush of 130 million gallons of
toxic water. Out of a population of 5,000 people, 125 people were killed, 1,121 were injured, and over 4,000 were left homeless. The flood caused 50 million dollars in damages. Despite evidence of negligence, the
Pittston Company, which owned the compromised dam, called the event an "
Act of God." In 2002, a 900-foot high, 2,000-foot long fill in
Lyburn, West Virginia burst, generating a large wave of sediment that destroyed several cars and houses.
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