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Abandoned Mine Land Program
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Priority 3 Problem Types
BE Bench
A ledge that forms a single level operation
along which mineral or waste materials are excavated. A solid bench is
that portion of a bench formed on a solid unexcavated material. A fill
bench is that portion of a bench usually consisting of unconsolidated spoil
material extending outward from the solid bench.
DP Industrial or Residential Waste Dumps
An area used to dispose of any kind of industrial
or residential waste not related to mining or processing..
EF Equipment and Facilities
Any equipment or buildings used to mine, process
or transport coal or mineral ores.
GO Gob
The refuse or waste removed from an underground
mine. This includes mine waste, rock, pyrites, slate or other unmarketable
materials which are separated during the cleaning process.
H Highwall
The face of exposed overburden or the face
or bank on the uphill side of a contour strip mine excavation
The vertical wall consisting or the deposit
being mined and the overlying rock and soil strata of the mining site.
HR Haul Road
A road built to carry loaded trucks from mine
heads. A road from pit to loading dock, tipple, ramp or preparation plant,
used for transporting mined material by truck.
MO Mine Opening
Any surface entrance or opening related to
an underground mine excavation..
O Other
An area causing an environmental impact that
does not fit one of the other Priority 3 definitions.
PI Pit, Open Pit, Strip Pit
The last uncovered cut adjacent to the highwall.
In surface mining the working area may be known as strip pit.
Mine workings or excavations open to the
surface are also termed pit.
SA Spoil, Spoil Bank
The overburden material removed in gaining
access to the coal seam or mineral deposit.
SL Slurry
Fine particle-size material from coal or mineral
processing stored in a pond. Solid must be separated from the water in
order to have clear effluent for reuse or discharge.
SP Slump
Any surface expression resulting from the
caving in of underground mine voids.
WA Water
Water leaving the AML Problem Area and causing
environmental impacts because of its pH (acidity), sediment load, or other
pollutants or because of its effect on other lands due to poor drainage
conditions (e.g. agricultural flooding).