NewMarket Corporation Schedules Conference Call and Webcast to Review Third Quarter 2007 Financial Results 

Richmond, VA, October 9, 2007-- NewMarket Corporation (NYSE: NEU) announced today it will release third quarter 2007 earnings at the close of business on Tuesday, October 30, 2007.  The earnings announcement will also be available on the company’s website at beginning Wednesday, October 31, 2007.  A conference call and Internet webcast is scheduled for 10:00 a.m. EDT on Thursday, November 1, 2007 to review third quarter 2007 financial results.

You can access the conference call live by dialing 1-877-407-8031 (domestic) or 1-201-689-8031 (international) and requesting the NewMarket conference call.  To avoid delays, callers should dial in five minutes early.  The call will also be broadcast via the Internet and can be accessed through the Company’s website at or   A teleconference replay of the call will be available until November 8, 2007 at 11:59 p.m. EST by dialing 1-877-660-6853 (domestic) and 1-201-612-7415 (international).  The account number is 286.  The conference ID number is 258216.  A webcast replay will be available for 30 days.

NewMarket Corporation through its subsidiaries, Afton Chemical Corporation and Ethyl Corporation, develops, manufactures, blends, and delivers chemical additives that enhance the performance of petroleum products. From custom-formulated chemical blends to market-general additive components, the NewMarket family of companies provides the world with the technology to make fuels burn cleaner, engines run smoother and machines last longer.

CONTACT: NewMarket Corporation, Richmond
  Investor Relations
  David A. Fiorenza, 804-788-5555
  Fax:  804-788-5688