Arch Coal's Q1 plummets from $55.6 million a year ago to just $1.2 million

Blaming  severe weakness in U.S. thermal coal markets, Arch Coal, Inc. (NYSE: ACI) today reported first quarter 2012 net income of $1.2 million, or $0.01 per diluted share, compared with net income of $55.6 million, or $0.34 per diluted share, in...