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  2. Coal - Wikipedia

    en.wikipedia.org/wiki/Coal

    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. [1]

  3. Berau Coal Energy - Wikipedia

    en.wikipedia.org/wiki/Berau_Coal_Energy

    Berau Coal became part of Vallar plc, British financier Nathaniel Rothschild's £700m cash shell, in July 2010. [7]In 2013, it was variously reported that $173 million had allegedly gone "missing" or that "mysteriously vanished" or that a withdrawal was "unauthorised" from Berau Coal under Rosan Roeslani's leadership.

  4. History of coal mining - Wikipedia

    en.wikipedia.org/wiki/History_of_coal_mining

    The History of coal mining goes back thousands of years, with early mines documented in ancient China, the Roman Empire and other early historical economies. It became important in the Industrial Revolution of the 19th and 20th centuries, when it was primarily used to power steam engines, heat buildings and generate electricity.

  5. Tanjung Bara - Wikipedia

    en.wikipedia.org/wiki/Tanjung_Bara

    Tanjung Bara itself has a fair tidal range from 4.4 to 2.8 meters (14.4–9.2 feet). The channel leading to the port has a higher draft allowed of 25 meters (82 feet). While the stockpile on the jetty can store up to 1.25 metric tons (1.38 short tons) of coal, each of the quadrant type loaders is capable of loading at a rate of 4,200 metric ...

  6. Grammage - Wikipedia

    en.wikipedia.org/wiki/Grammage

    In the metric system, the mass per unit area of all types of paper and paperboard is expressed in terms of grams per square metre (g/m 2).This quantity is commonly called grammage in both English and French, [2] though printers in most English-speaking countries still refer to the "weight" of paper.

  7. Bara - Wikipedia

    en.wikipedia.org/wiki/Bara

    Bara, an Indian Kannada-language film; Bara, a Malaysian Malay-language film; Bara (genre), a genre of Japanese media, especially comics, aimed at gay men; Bara, a genus of insects in the family Tetrigidae called ground-hoppers; Bara people, a people of central southern Madagascar; Bara Rifles, a Pakistani paramilitary regiment

  8. Bar (unit) - Wikipedia

    en.wikipedia.org/wiki/Bar_(unit)

    The bar is a metric unit of pressure defined as 100,000 Pa (100 kPa), though not part of the International System of Units (SI). A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar).

  9. Sharpening stone - Wikipedia

    en.wikipedia.org/wiki/Sharpening_stone

    The term is based on the word "whet", which means to sharpen a blade, [3] [4] not on the word "wet". The verb nowadays to describe the process of using a sharpening stone for a knife is simply to sharpen, but the older term to whet is still sometimes used, though so rare in this sense that it is no longer mentioned in, for example, the Oxford Living Dictionaries.

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