Oak Ridge National Laboratory
Oak Ridge National Laboratory UT-Battelle U.S. Department of Energy Oak Ridge National Laboratory Oak Ridge National Laboratory Oak Ridge National Laboratory
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ORNL Contractors

Since 1943 Oak Ridge National Laboratory has been operated by several different government contractors under several different names. The table below summarizes the historical operators and names of ORNL.

Date
Contractor
Laboratory Name
1/1943 - 6/30/1945 E. I. DuPont de Nemours for The University of Chicago Clinton Laboratories
7/1945 - 12/1946 Monsanto Chemical Company Clinton Laboratories
1/1/1947 - 2/28/1948 Atomic Energy Commission Clinton Laboratories
3/4/1948 Carbide & Carbon Chemicals Company, Union Carbide Corporation Oak Ridge National Laboratory
1950 Carbide & Carbon Chemical Division, UCC Oak Ridge National Laboratory
1956 Union Carbide Nuclear Corporation, Division of UCC Oak Ridge National Laboratory
1964 - 1974 Union Carbide Nuclear Corporation, Nuclear Division Oak Ridge National Laboratory
1975 Union Carbide Corporation, Nuclear Division Holifield National Laboratory
1976 - 3/31/1984 Union Carbide Corporation, Nuclear Division Oak Ridge National Laboratory
4/1/1984 - 3/31/1995 Martin Marietta Energy Systems, Inc. Oak Ridge National Laboratory
4/1/1995-12/31/1995 Lockheed Martin Energy Systems, Inc. Oak Ridge National Laboratory
1/1/1996 - 3/31/2000 Lockheed Martin Energy Research, Inc. Oak Ridge National Laboratory
4/1/2000 - Present UT-Battelle Oak Ridge National Laboratory

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Oak Ridge National Laboratory
P.O. Box 2008, Oak Ridge, TN 37831, USA
Phone: (+1) 865.574.4160
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Office of Science
U.S. Department of Energy
Revised: November 30, 2007 - [an error occurred while processing this directive]