UNITED STATES OF AMERICA,                   Plaintiff,                   v. DENTSPLY INTERNATIONAL, INC.,                             Defendant.

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Civil Action No. 99-005 (MMS)

Pursuant to Fed. R. Civ. P. 26(a)(3)(A) and the amended discovery plan entered by the Court on October 12, 1999, Plaintiff the United States of America hereby serves its witness list on Defendant Dentsply International, Inc. Included are names of witnesses who Plaintiff expects to call and names of witnesses who Plaintiff may call if the need arises.

This list does not include the names of any rebuttal witnesses or potential expert witnesses. The United States will provide the names of its expert witnesses on February 29, 2000, as required under the amended discovery plan.

Expect to Call:

John C. Miles, II
Dentsply International, Inc.
570 West College Avenue
P.O. Box 872
York, Pennyslvania 17405-0872

Robert Ganley
Ivoclar North America, Inc.
175 Pineview Drive
Amherst, NY 14228

Ralf Barschow
Ivoclar AG
Benderstrasse 2FL-9494
Schaan, Lichtenstein
Gordon L. Lang (Counsel)
Nixon Peabody, LLP
One Thomas Circle, 7^th Floor
Washington, D.C. 20005-5802
(202) 457-5319

Wayne Whitehill
Vident
3150 E. Birch Street
Brea, CA 92621

Henry Rauter
VitaZahnFabrik AG
c/o Monte M.F. Cooper, Esq.
Orrick, Herrington & Sutcliffe
1020 Marsh Road
Menlo Park, CA 94025
(650) 614-7375

Bryan Bremer
Austenal Corporation/Myerson-Kenson
4101 W. 51^st Street
Chicago, IL 60632-4287

James H. Swartout
Austenal Corporation/Myerson-Kenson
4101 W. 51^st Street
Chicago, IL 60632-4287
(312) 838-6026

Norman Weinstock
Zahn Dental Company, Inc./Henry Schein, Inc.
135 Duryea Road
Melville, NY 11747-3834

Thomas Cavanagh
309 Kazimour Road
Barrington, IL 60010

Kevin Ackeret
Sullivan Dental/Henry Schein, Inc.
10920 West Lincoln Avenue
West Allis, WI 53227

Betsy Harris
Atlanta Dental Supply
3080 Presidential Drive
Atlanta, GA 30340

Robert Raths
Dental Technicians Supply/Darby Dental Lab Supply Company, Inc.
30 Nassau Terminal Road
New Hyde Park, NY 11040

Keyhan Kashfian
Pearson Dental Supply, Inc.
13161 Telfair Avenue
Sylmar, CA 91342

Barry Salzman
Becker-Parkin Dental Equipment & Supply Co.
New York, NY

Sidney Nordhauser
Darby Dental Lab Supply Company, Inc.
865 Merrick Avenue
Westbury, NY 11590

May Call If Need Arises:

Steve Kircheimer
Dentsply International, Inc.
570 West College Avenue
P.O. Box 872
York, Pennyslvania 17405-0872

Vern Hale
Vident
3150 E. Birch Street
Brea, CA 92621

Jerry Swanson
3M's Dental Products Division
3M Center Bldg., 260-28-09
St. Paul, MN 55144-1000

Bob Foyle
Heraeus Kulzer,Inc.
4315 S. Lafayette Blvd.
South Bend, IN 45514-2517

Gordon W. Hagler
4 Lafayette Trail
Newtown, CT 06470

Maurice Mazz
Zahn Dental Company, Inc./Henry Schein, Inc.
135 Duryea Road
Melville, NY 11747-3834

James Wiltz
Patterson Dental Company
1031 Mendota Heights Road
St. Paul, MN 55120

Regis G. Vetrano
Dental Laboratory Discount Supply/Henry Schein, Inc.
810 East Main Street
Branford, CT 06405

Saul Shernowitz
Island Dental Supply/Darby Dental Lab Supply Company, Inc.
Hauppauge, NY

Wayne Murray
Acrylic Works Dental Lab
216 S. Seventh Street, Suite 19
Las Vegas, NV 89101

Phil Watkins
Functional Aesthetics Dental Laboratory
886 N. Mill Road
Lewisville, TX 75067

Ron Fichter
Glidewell Laboratories
4141 MacArthur Blvd.
Newport Beach, CA 92660

Reynolds Challoner
Lord's Dental Laboreatory
501 Packerland Drive
P.O. Box 19048
Green Bay, WI 54307

Danny Wong
Americus Dental Laboratories
New York, NY

Greg Thayer
Thayer Dental Laboratory
Mechanicsburg, PA

Phillip Moyer
Associated Dental Laboratory
Clearwater, FL

Gerry Mariacher
National Dentex
111 Speen Street, Suite 520
Framingham, MA 01701

James McLees
DiMartino Dental Lab, Inc.
345 Burnette N.
Renton, WA 98055

John J. Ryan
Sonshine Dental Labs, Inc.
Suite 201, Geissler Park
P.O. Box 39
Bear, DE 19701
(302) 834-0427

William Grill
Thompson Suburban Full Service Lab
1922 Greenspring Drive, #9
Timonium, MD
(410) 453-9600

Ray Siecinski
Accurate Dental Lab
525 Milltown Road
New Brunswick, NJ 08902
(732) 545-5269

Michael Lombardi
A & M Dental Lab
110 S. Lincoln Ave.
Middlesex, NJ 08846
(732) 968-5858

DATE:     February 15, 2000

COUNSEL FOR PLAINTIFF UNITED STATES OF AMERICA CARL SCHNEE UNITED STATES ATTORNEY Judith M. Kinney (DSB #3643) Assistant United States Attorney 1201 Market Street, Suite 1100 Wilmington, DE 19801 (302) 573-6277 _______________/s/_______________ Mark J. Botti William E. Berlin Jon B. Jacobs Sanford M. Adler Frederick S. Young Dionne C. Lomax Eliza T. Platts-Mills United States Department of Justice Antitrust Division 325 Seventh Street, N.W., Suite 400 Washington, DC 20530 (202) 307-0827