Arch's mountain laurel mine discontinues longwall operations three months early

Arch's mountain laurel mine discontinues longwall operations three months early, accelerates transition to a room-and-pillar mine.arch coal inc - move is expected to reduce arch's q4 coking coal volumes by between 150,000 and 200,000 tons.arch coal inc - move is expected to reduce q4 operating results by approximately $20 million versus previous expectations.arch coal inc - once removed from mine, longwall system will be refurbished and relocated to leer south mine.arch coal - mountain laurel's cost structure should decline by around $10 per ton when compared to its average cash cost in first nine months of 2019.arch coal inc - no changes in mine's workforce are anticipated.
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