CLAYTON, Mo. and HOUSTON, Aug. 31, 2007 (PRIME NEWSWIRE) -- Olin Corporation (NYSE:OLN) and Pioneer Companies, Inc. (Nasdaq:PONR) announced today the completion of the merger of Princeton Merger Corp.

CLAYTON, Mo. and HOUSTON, Aug. 28, 2007 (PRIME NEWSWIRE) -- Olin Corporation (NYSE:OLN) and Pioneer Companies, Inc.

CLAYTON, Mo. and HOUSTON, July 16, 2007 (PRIME NEWSWIRE) -- Olin Corporation (NYSE:OLN) and Pioneer Companies, Inc. (Nasdaq:PONR) announced today that the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 for Olin's acquisition of Pioneer has expired.

CLAYTON, Mo. and HOUSTON, May 21, 2007 (PRIME NEWSWIRE) -- Olin Corporation (NYSE:OLN) and Pioneer Companies, Inc. (Nasdaq:PONR) announced today that they have reached a definitive agreement under which Olin will acquire Pioneer, a leading producer of chlor-alkali products.

HOUSTON, May 1, 2007 (PRIME NEWSWIRE) -- Pioneer Companies, Inc. (Nasdaq:PONR) today announced that it has entered into a contract with Chlorine Engineers Corp., Ltd. (CEC) to purchase the membrane cells for the previously announced expansion and conversion of its chlor-alkali facility in St.