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Fast Facts About Coal
Total demand for U.S. coal reached 1.12 billion tons in 2008.
Half of U.S. electricity is generated from coal.
9 out of every 10 tons of coal mined each year in the U.S. is used for domestic electricity generation.
Each person in the U.S. uses 3.7 tons of coal annually.
Coal is the most affordable source of power fuel per million Btu, historically averaging less than one-quarter the price of petroleum and natural gas.
There are approximately 600 coal generating facilities (1,470 generating units) and 1,100 manufacturing facilities using coal in the U.S., according to the U.S. Energy Information Administration (EIA).
Coal accounts for about 32 percent of U.S. total energy production and 23 percent of total energy consumption.
U.S. Coal Production
Nearly 30 percent of U.S. mines are owned by public companies. Public companies produce approximately 75 percent of U.S. coal.
The U.S. has produced more than 1 billion tons of coal annually for each of the last 15 years.
Approximately two-thirds of today's coal production results from surface, rather than underground, mining.
Mountaintop mining in Appalachia contributes approximately 10 percent of all coal mined in the U.S. and is roughly 40 percent of the coal mined in West Virginia and Kentucky.
The U.S. has nearly 262 billion tons of recoverable coal reserves, according to the Energy Information Administration.
That's a 235-year supply at current rates of use.
Coal accounts for approximately 94 percent of the nation's fossil energy reserve.
Coal is found in 38 states, under 458,600 square miles-or about 13 percent of the nation's land area.
U.S. Coal Mining Employment
U.S. coal mining directly employs nearly 134,000 people;
For each coal mining job, an additional 3.5 jobs are created elsewhere in the economy.
The National Mining Association estimates 50,000 new employees will be needed in coal mining over the next 10 years to meet increasing demand and to replace retiring workers.
U.S. Coal and the Environment
Power plants being built today emit 90 percent less pollutants (SO2, NOx, Particulates, mercury) than the plants they replace from the 1970s, according the National Energy Technology Laboratory.
Coal plants in the 21st century emit 40% less co
than the average 20th century coal plant, according to the World Coal Institute.
Regulated emissions from coal-based electricity generation have decreased overall by over 40 percent since the 1970s while coal use has tripled, according to government statistics.
U.S. coal operations have reclaimed more than 2.3 million acres of mined land over the past 25 years.
Since 1978, U.S. coal mines have paid more than $7 billion to reclaim mines that were abandoned prior to laws requiring reclamation.
Approximately five million acres of land have been mined in the U.S. to produce coal; and most of the land not under active mining has been or is being reclaimed to the standards set by law.
U.S. Coal Transportation
Railroads move about two-thirds of U.S. coal shipments annually.
Nearly all coal shipped by railroads is transported by unit trains, and the weighted average number of cars in a coal unit train was 114, according to the 2006 Waybill Statistics.
Coal is the largest freight commodity moved by barges on the nation's inland waterways.
Four Basic Varieties of Coal:
Sometimes also called "hard coal," anthracite was formed from bituminous coal when great pressures developed in folded rock strata during the creation of mountain ranges. Anthracite has the highest energy content of all coals and is used for space heating and generating electricity. Anthracite averages 25 million Btu per ton.
Bituminous or "soft" coal formed when greater pressure was applied to subbituminous coal. This is the type most commonly used for electric power generation in the U.S.. It has a higher heating value than either lignite or subbituminous, but less than that of anthracite. Bituminous coal averages 24 million Btu per ton.
Subbituminous coal formed from lignite when it came under higher pressure. This coal is a combustible mineral formed from the remains of trees, ferns and other plants that existed and died during the time of the dinosaurs. A dull black coal with a higher heating value than lignite that is used primarily for generating electricity and for space heating. Subbituminous coal averages 18 million Btu per ton.
Increased pressures and heat from overlying strata caused buried peat to dry and harden into lignite. Lignite is a brownish-black coal with generally high moisture and ash content and lower heating value. However, it is an important form of energy for generating electricity, particularly in the American Southwest. Lignite averages 14 million Btu per ton.