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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]
The reserve list specifies different types of coal and includes countries with at least 0.1% share of the estimated world's proven reserves of coal. All data are taken from the German Federal Institute for Geosciences and Natural Resources (BGR) via BP; all numbers are in million tonnes. [1]
The Ombilin Coal Mine (formerly PT Tambang Batubara Ombilin (TBO)) is a coal mine near Sawahlunto, West Sumatra, Indonesia. It is located in a narrow valley along the Bukit Barisan mountains, among the Polan, Pari, and Mato hills, approximately 70 kilometres (43 mi) northeast of Padang .
Batubara Regency is a regency on North Sumatra's eastern shoreline, with the town of Limapuluh as the seat of its administration. It was carved out from the seven most westerly coastal districts of Asahan Regency with effect from 15 June 2007.
Abdul Somad was born on 18 May 1977 in Silo Lama, a village in Asahan Regency, North Sumatra, as the son of Bakhtiar and Rohana. [9] [10] From the mother's side, he is descended from Sheikh Abdurrahman, nicknamed Tuan Syekh Silau Laut I, a Sufi scholar of the Shattari Order who was born in Rao, Batu Bara.
Top 5 oil-producing countries 1980–2022 World oil production. This is a list of countries by oil production (i.e., petroleum production), as compiled from the U.S. Energy Information Administration database for calendar year 2023, tabulating all countries on a comparable best-estimate basis.
A form of diagenesis is permineralization, in which buried organisms are replaced by minerals.These trilobites (Lloydolithus) were replaced by pyrite during a specific type of permineralization called pyritization.
PT Pendopo Energi Batubara: owns a concession area of 17,840 hectares in South Sumatera. PT Bumi Resources Minerals Tbk: operates other (non-coal) mining assets. Kalimantan Coal Limited. Bumi Investment Pte. Ltd. Herald Resources Pty. Ltd. Bumi Capital Pte. Ltd. Indocoal Resources (Cayman) Ltd. PT Kaltim Prima Cbm . PT Pendopo Energi Nusantara.