UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:
May 19, 2010 3:00 P.M.
Form:
S-3
CIK:
0000071829
Company Name:
NEWPARK RESOURCES INC
File Number:
333-166776
CIK:
0001474859
Company Name:
Excalibar Minerals LLC
File Number:
333-166776-11
CIK:
0001474855
Company Name:
Newpark Drilling Fluids LLC
File Number:
333-166776-10
CIK:
0001475527
Company Name:
Newpark Drilling Fluids International LLC
File Number:
333-166776-09
CIK:
0001475526
Company Name:
Newpark Drilling Fluids Personnel Services LLC
File Number:
333-166776-08
CIK:
0001053836
Company Name:
NEWPARK ENVIRONMENTAL MANAGEMENT CO LLC
File Number:
333-166776-07
CIK:
0001474856
Company Name:
Newpark Environmental Services LLC
File Number:
333-166776-06
CIK:
0001053847
Company Name:
NEWPARK ENVIRONMENTAL SERVICES MISSISSIPPI L P
File Number:
333-166776-05
CIK:
0001475525
Company Name:
Newpark Environmental Water Solutions LLC
File Number:
333-166776-04
CIK:
0001474857
Company Name:
Newpark Mats & Integrated Services LLC
File Number:
333-166776-03
CIK:
0001053830
Company Name:
NEWPARK TEXAS LLC
File Number:
333-166776-02
CIK:
0001474858
Company Name:
Dura-Base Nevada, Inc.
File Number:
333-166776-01