Webcast Alert: NewMarket Corporation Announces Its Fourth Quarter 2004

    Business Editors/Chemicals Writers

    RICHMOND, Va--(BUSINESS WIRE)--Feb. 3, 2005--NewMarket Corporation (NYSE:NEU) announces the following Webcast:

What: NewMarket Corporation Fourth Quarter 2004 & Year End Financial Results Conference Call Webcast

When: February 4, 2005 @ 11:00 AM Eastern

Where: http://www.vcall.com/EventPage.asp?ID=90433

How: Live over the Internet -- Simply log on to the web at the address above.

Contact: David Fiorenza, 804-788-5555 or investorrelations@newmarket.com
    If you are unable to participate during the live webcast, the call will be available for replay at http://www.vcall.com/ClientPage.asp?ID=90433 or http://www.vcall.com/
    NewMarket Corporation is the parent company of Afton Chemical Corporation and Ethyl Corporation. As a parent company, NewMarket provides the leadership, guidance, and support that will enable both Afton and Ethyl to succeed by meeting the demands of an ever changing market with outstanding products, technology, and service that deliver lasting quality.
    Against the background of that changing market, we see growth not only from the expansion of our existing customer base and the continuous addition of new industry-leading products, but also from acquisitions. With the holding company structure, acquisitions and joint ventures are simplified, diversification into new markets is easier, and financing options are improved.

--30--KS/ch*

CONTACT: NewMarket Corporation David Fiorenza, 804-788-5555 investorrelations@newmarket.com

KEYWORD: VIRGINIA NEW YORK INDUSTRY KEYWORD: CHEMICALS/PLASTICS CONFERENCE CALLS SOURCE: NewMarket Corporation

Copyright Business Wire 2005