Release Details

THE WOODLANDS, Texas, Sept. 24 /PRNewswire-FirstCall/ -- Newpark Resources, Inc. (NYSE: NR) announced today that it will release its third quarter 2007 results on Monday, November 5, 2007 at approximately 6:00 a.m. Eastern Time. In conjunction with the release, the Company has scheduled a conference call, which will be broadcast live over the Internet, on Monday, November 5, 2007 at 11:00 a.m. Eastern / 10:00 a.m. Central.

    What:      Newpark Resources Third Quarter 2007 Earnings Conference Call

    When:      Monday, November 5, 2007 at 11:00 a.m. Eastern / 10:00 a.m.
               Central

    How:       Live via phone -- By dialing 303-262-2141 and asking for the
               Newpark Resources call at least 10 minutes prior to the start
               time, or Live over the Internet -- By logging onto the web at
               the address below

    Where:     http://www.newpark.com

For those who cannot listen to the live call, a replay will be available through November 12, 2007 and may be accessed by dialing (303) 590-3000 and using pass code 11098107#. Also, an archive of the webcast will be available shortly after the call at http://www.newpark.com for 90 days.

Newpark Resources, Inc. is a worldwide provider of drilling fluids, temporary worksites and access roads for oilfield and other commercial markets, and environmental waste treatment solutions. For more information, visit our website at http://www.newpark.com.

SOURCE Newpark Resources, Inc.

CONTACT: James E. Braun, CFO of Newpark Resources, Inc., +1-281-362-6800; or Ken Dennard, Managing Partner of Dennard Rupp Gray & Easterly, LLC, +1-713-529-6600, ksdennard@drg-e.com, for Newpark Resources,