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Brown coal (lignite) is a soft brown combustible sedimentary rock

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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
Lignite, often referred to as brown coal, is a soft brown
Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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Brown coal (lignite) is a soft brown combustible sedimentary rock
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