coal reserve notes

  • United States Low Sulfur Coal Reserves: an Assessment of ...

    Quantita- tively, these states account for approximately 4 billion tons or about 0.3 percent of the grand total in 1C 8312. However, it should be noted that 1C 8312 is an estimate of identified coal resources, while 1C 8680-93 is an estimate of the coal reserve base. As such, it is possible that a coal reserve base does not exist in these 5 states.

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  • AUSTRALIAN GUIDELINES FOR THE ESTIMATION AND ...

    Coal Reserve Coal Reserve has the same meaning as "Ore Reserve" as defined in the Code. Coal Resource Coal Resource has the same meaning as "Mineral Resource" as defined in the Code. Composition Composition of coal refers to the chemical characteristics of a coal sample. These in turn

  • Anthracite - Wikipedia

    Anthracite. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coal. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92% and 98%.

  • Coal Deposits and Properties - The McKetta Department of ...

    Anthracite coal is the highest rank of coal, having the highest carbon content. Anthracite reserves are approximately 7 billion tons (all reference to tonnage is in "short" tons as opposed to metric tons) in the United States and are largely

  • Coal - Wikipedia

    Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams.Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed if dead plant matter decays into peat and over millions of years the heat and pressure of deep burial converts the peat into coal.