First Quarter 2009 Westlake Chemical Corporation Earnings Conference Call
HOUSTON , April 21 /PRNewswire-FirstCall/ -- Westlake Chemical Corporation (NYSE: WLK) will release its 2009 first quarter earnings prior to the market opening on Tuesday, May 5, 2009 . The company will host a conference call at 11:00 a.m. Eastern Time ( 10:00 a.m.