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Apr 20, 2018018332Analysis Key US Metallurgical Coal Mines See Production Recovery in Quarter 1 . By Hector Forster and Jonathan LoadesCarter. April 20, 2018 Several US lowvol and midvol coking coal mines produced at higher rates in the first quarter during a period of rising export and domestic prices, US government data analysed Friday by SampP Global Platts showed..
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