LONACONING, Md. — The most recent jackpot-profitable Powerball ticket, valued $731.1 million, was sold in a struggling coal mining city whose largest earlier claim to fame was being the hometown of baseball legend Lefty Grove. The lottery ticket is a big win for a city that has a protracted history of losses, from the iron furnace that closed in 1855 to the glassworks that have been shuttered within the early 1900s to the coal-mining jobs that virtually disappeared