Wausau-Mosinee Paper Corporation To Release 2004 Second-Quarter Financial Results On July 21

MOSINEE, Wisc.–(BUSINESS WIRE)–July 8, 2004–Wausau-Mosinee Paper Corporation (NYSE:WMO) will release 2004 second-quarter financial results on Wednesday, July 21, after the closing of the New York Stock Exchange. The company will hold a Webcast to discuss earnings and current market conditions at 11 a.m. (EDT) on Thursday, July 22.

All interested parties are invited to listen to the Webcast live via the Company’s Internet site at http://www.wausaumosinee.com under “Investor Information.” A replay of the call will also be available on the Web site from 1:30 p.m. (EDT) on July 22 until midnight July 29.

Wausau-Mosinee Paper Corporation produces fine printing and writing papers, technical specialty papers, and “away-from-home” towel and tissue products.

      CONTACT: Wausau-Mosinee Paper Corporation              Scott P. Doescher, 715-693-4470      SOURCE: Wausau-Mosinee Paper Corporation