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Added data up to 30 September 2021. Changed Y axis labels to powers of 10. 10:02, 1 November 2019: 567 × 319 (22 KB) Ladislav Mecir: Adjust maximum of the horizontal axis, add data up to 29 October 2019. 16:44, 15 October 2019: 567 × 319 (22 KB) Ladislav Mecir: Add data up to 1 October 2019: 23:24, 2 January 2017: 567 × 319 (22 KB) Ladislav ...
Alpha Metallurgical Resources, formerly Contura Energy (January 2021), is a leading coal supplier with underground and surface coal mining complexes across Northern and Central Appalachia. Contura owns large coal basins in Pennsylvania, Virginia and West Virginia which supply both metallurgical coal to produce steel and thermal coal to generate ...
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Mining pools may contain hundreds or thousands of miners using specialized protocols. [4] In all these schemes B {\displaystyle B} stands for a block reward minus pool fee and p {\displaystyle p} is a probability of finding a block in a share attempt ( p = 1 / D {\displaystyle p=1/D} , where D {\displaystyle D} is current block difficulty).
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Alpha miner was the first process discovery algorithm ever proposed, and it gives a good overview of the aim of process discovery and how various activities within the process are executed. Alpha miner was also the basis for the development of many other process mining techniques such as heuristic miner , genetic mining was developed based on ...
Alpha secured $3.3 billion in financing for the takeover from Citigroup and JPMorgan Chase. [10] The combined entity will be the world's number three producer of metallurgical coal, behind BHP and Teck Resources. [13] Alpha settled Massey's Upper Big Branch Mine disaster liabilities with the U.S. Attorney for $209 million on December 6, 2011.