OEC COMPRESSION CORP
SC 13D/A, 2000-06-02
EQUIPMENT RENTAL & LEASING, NEC
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                (Amendment No. 2)
                    under the Securities Exchange Act of 1934

                           OEC Compression Corporation
                                (Name of Issuer)

                     Common Stock, par value $1.00 per share
                         (Title of Class of Securities)

                                   670827 10 4
                                 (CUSIP Number)

                       Shareholder Preservation Committee
                               c/o Dennis W. Estis
                               3592 Waverly Circle
                                Destin, FL 32541
                                 (850) 650-5874
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  May 30, 2000
             (Date of Event which Requires Filing of this Statement)


 If the filing person has previously filed a statement on Schedule 13G to report
   the acquisition that is the subject of this Schedule 13D, and is filing this
 schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
                                 following box.
                            -------------------------
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION

1.    Names of reporting persons:  Dennis W. Estis

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      ________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power                               5,370,487

      8.    Shared Voting Power                             5,900,766

      9.    Sole Dispositive Power                          5,370,487

      10.   Shared Dispositive Power                          0

11.   Aggregate amount beneficially owned by each
      reporting person:                                    11,271,253

12.   Check box if the aggregate amount in Row 11 excludes
      certain shares (see instructions):                    [     ]

13.   Percent of class represented by amount in Row 11:        38.5%

14.   Type of reporting person (see instructions):          IN

                                       1-A
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Robert P. Gregory, Jr.

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [  ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power                   0

      8.    Shared Voting Power                 3,037,251

      9.    Sole Dispositive Power              3,037,251

      10.   Shared Dispositive Power            0

11.   Aggregate amount beneficially owned
      by each reporting person:                 3,037,251

12.   Check box if the aggregate amount in
      Row 11 excludes certain shares
      (see instructions):                       [  ]

13.   Percent of class represented by amount in Row 11:           10.5%

14.   Type of reporting person (see instructions):                IN

                                       1-B
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Don  E. Smith

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           716,559

      9.    Sole Dispositive Power        716,559

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         716,559

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           2.5%

14.   Type of reporting person (see instructions):                IN

                                       1-C
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION

1.    Names of reporting persons:  Charles M. Butler, III

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power                   0

      8.    Shared Voting Power           144,166

      9.    Sole Dispositive Power        144,166

      10.   Shared Dispositive Power            0

11.   Aggregate amount beneficially owned by each
      reporting person:                         144,166

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.5%

14.   Type of reporting person (see instructions):                IN

                                       1-D
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Frank W. Gagliardi

      IRS Identification Nos. of above persons (entities only):

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           75,582

      9.    Sole Dispositive Power        75,582

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         75,582

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.3%

14.   Type of reporting person (see instructions):                IN

                                      1- E
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  David F. Sahler

      IRS Identification Nos. of above persons (entities only):

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           6,100

      9.    Sole Dispositive Power        6,100

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         6,100

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                  [ ]

13.   Percent of class represented by amount in Row 11:    0.0% (less than 1/10
                                                                 of one percent)

14.   Type of reporting person (see instructions):         IN

                                      1- F
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Danny A. Nicos

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           12,678

      9.    Sole Dispositive Power        12,678

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         12,678

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1- G
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Walter Ernest Fischer III

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [  ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           2,768

      9.    Sole Dispositive Power        2,768

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                   2,768

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                       [ ]

13.   Percent of class represented by amount in Row 11:    0.0% (less than 1/10
                                                                 of one percent)

14.   Type of reporting person (see instructions):         IN

                                      1- H
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Tommy Preston Nicar

      IRS Identification Nos. of above persons (entities only):

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           361,389

      9.    Sole Dispositive Power        361,389

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         361,389

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                              [ ]

13.   Percent of class represented by amount in Row 11:           1.3%

14.   Type of reporting person (see instructions):                IN

                                      1- I
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Robert Michael Scott

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           54,902

      9.    Sole Dispositive Power        54,902

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         54,902

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.2%

14.   Type of reporting person (see instructions):                IN

                                      1- J
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Robert T. Yount

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           2,080

      9.    Sole Dispositive Power        2,080

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                   2,080

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of
                                                                    one percent)

14.   Type of reporting person (see instructions):            IN

                                      1- K
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Brian L. Fuller

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           3,615

      9.    Sole Dispositive Power        3,615

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                   3,615

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1- L
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


7.    Names of reporting persons: Clifford Anil Ware

      IRS Identification Nos. of above persons (entities only): ________________

8.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

9.    SEC use only:

      __________________________________________________________________________

10.   Source of funds (see instructions): PF

11.   Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

12.   Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,945

      9.    Sole Dispositive Power        1,945

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,945

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1- M
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Joseph Edwin Knight Dickey McReynolds

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           337

      9.    Sole Dispositive Power        337

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         337

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1- N
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Michael Wayne Balcar, Jr.

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,050

      9.    Sole Dispositive Power        1,050

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,050

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.0%

14.   Type of reporting person (see instructions):                IN

                                      1- O
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Energy Equipment Services, Inc.

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): WC

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  TX

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           17,000

      9.    Sole Dispositive Power        17,000

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         17,000

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                CO

                                      1- P
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Shelton R. & Mary Smith

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           238,502

      9.    Sole Dispositive Power        238,502

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         238,502

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.8%

14.   Type of reporting person (see instructions):                IN

                                       1-R
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Troy & Sue Jones

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           185,206

      9.    Sole Dispositive Power        185,206

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         185,206

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.6%

14.   Type of reporting person (see instructions):                IN

                                       1-S
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Kathy Branch

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           36,899

      9.    Sole Dispositive Power        36,899

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         36,899

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                       1-T
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Robert L. Humphrey

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           14,500

      9.    Sole Dispositive Power        14,500

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         14,500

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                       1-U
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Paulette C. Humphrey

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           12,500

      9.    Sole Dispositive Power        12,500

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         12,500

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                       1-V
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Boyd B. Badley, Jr.

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           19,676

      9.    Sole Dispositive Power        19,676

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         19,676

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                       1-W
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Stanley E. Bennett

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           5,777

      9.    Sole Dispositive Power        5,777

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         5,777

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                       1-X
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Joe E. Hicks, Jr.

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           12,410

      9.    Sole Dispositive Power        12,410

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         12,410

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:       0.0%  (less than
                                                                     1/10 of one
                                                                     percent)

14.   Type of reporting person (see instructions):            IN

                                       1-Y
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  James M. Neher

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           129,674

      9.    Sole Dispositive Power        129,674

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         129,674

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.4%

14.   Type of reporting person (see instructions):                IN

                                       1-Z
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  T. B. Polk

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           130,000

      9.    Sole Dispositive Power        130,000

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         130,000

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:           0.4%

14.   Type of reporting person (see instructions):                IN

                                      1-AA
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Edward E. Smith

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           44,030

      9.    Sole Dispositive Power        44,030

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         44,030

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                      1-BB
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Garland D. Upton

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           32,030

      9.    Sole Dispositive Power        32,030

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         32,030

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                      1-CC
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Michael T. Weaver

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           3,188

      9.    Sole Dispositive Power        3,188

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         3,188

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-DD
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Leonard A. Woodall

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           22,959

      9.    Sole Dispositive Power        22,959

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         22,959

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-EE
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Moses Lamar Beasley

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,683

      9.    Sole Dispositive Power        1,683

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,683

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-FF
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Jeremiah C. Young

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power        3,905

      9.    Sole Dispositive Power     3,905

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         3,905

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:     0.0% (less than
                                                            1/10 of one percent)

14.   Type of reporting person (see instructions):                IN

                                      1-GG
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Gary Dale Spurlock

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,162

      9.    Sole Dispositive Power        1,162

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,162

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-HH
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Timothy Todd Causey

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           7,389

      9.    Sole Dispositive Power        7,389

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         7,389

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-II
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Jeff W. DeLancey

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           4,565

      9.    Sole Dispositive Power        4,565

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         4,565

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-JJ
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Albert Ray Sones

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           19,000

      9.    Sole Dispositive Power        19,000

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         19,000

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                      1-KK
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Terry M. Jones

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           14,518

      9.    Sole Dispositive Power        14,518

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         14,518

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                      1-LL
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Gary M. Thornhill

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      --------------------------------------------------------------------------

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,449

      9.    Sole Dispositive Power        1,449

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,449

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-MM
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Clayton Burge

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,431

      9.    Sole Dispositive Power        1,431

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,431

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):                IN

                                      1-NN
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Ricky L. Hatton

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): 00

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           88,179

      9.    Sole Dispositive Power        88,179

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         88,179

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.3%

14.   Type of reporting person (see instructions):                IN

                                      1-OO
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Benjamin J. Sanders

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,470

      9.    Sole Dispositive Power        1,470

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,470

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-PP
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Willie A. Sanders

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           2,583

      9.    Sole Dispositive Power        2,583

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         2,583

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-QQ
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Susan R. Ross

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           816

      9.    Sole Dispositive Power        816

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         816

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-RR
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Enos R. Jenkins

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           59,500

      9.    Sole Dispositive Power        59,500

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         59,500

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.2%

14.   Type of reporting person (see instructions):                IN

                                      1-SS
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Benjamin S. Watson

      IRS Identification Nos. of above persons (entities only):

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           3,620

      9.    Sole Dispositive Power        3,620

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         3,620

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-TT
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Jason Anderson

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           718

      9.    Sole Dispositive Power        718

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         718

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-UU
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Stevie D. Anderson & Glenda J. Anderson

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [  ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           37,016

      9.    Sole Dispositive Power        37,016

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         37,016

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.1%

14.   Type of reporting person (see instructions):                IN

                                      1-VV
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Celina M. Anderson

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): OO

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           717

      9.    Sole Dispositive Power        717

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         717

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-WW
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  David J. Parsons

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           16,520

      9.    Sole Dispositive Power        16,520

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         16,520

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-XX
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Carroll G. Broome

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      --------------------------------------------------------------------------

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           100,936

      9.    Sole Dispositive Power        100,936

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         100,936

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.3%

14.   Type of reporting person (see instructions):                IN

                                      1-ZZ
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Lucille Wiggins

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           86,200

      9.    Sole Dispositive Power        86,200

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         86,200

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                         [ ]

13.   Percent of class represented by amount in Row 11:           0.3%

14.   Type of reporting person (see instructions):                IN

                                      1-YY
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Robert W. Morgan

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           7,438

      9.    Sole Dispositive Power        7,438

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         7,438

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-AAA
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Richard E. Hammons

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           7,660

      9.    Sole Dispositive Power        7,660

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         7,660

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-BBB
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Howard R. Broome

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           9,133

      9.    Sole Dispositive Power        9,133

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         9,133

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-CCC
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  David L. Merchant

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           5,218

      9.    Sole Dispositive Power        5,218

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         5,218

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-DDD
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Charles M. Smith

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      --------------------------------------------------------------------------

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,286

      9.    Sole Dispositive Power        1,286

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,286

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-EEE
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Bud W. Langston

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           86,081

      9.    Sole Dispositive Power        36,081

      10.   Shared Dispositive Power      50,000

11.   Aggregate amount beneficially owned by each
      reporting person:                         86,081

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions): [ ]

13.   Percent of class represented by amount in Row 11:           0.3%

14.   Type of reporting person (see instructions):                IN

                                      1-FFF
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  James N. Lowery

      IRS Identification Nos. of above persons (entities only): ________________

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           4,000

      9.    Sole Dispositive Power        4,000

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         4,000

12.   Check box if the aggregate amount in Row 11 excludes certain shares
      (see instructions):                                     [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-GGG
<PAGE>
CUSIP NO. 420258 10 5
OEC COMPRESSION CORPORATION


1.    Names of reporting persons:  Lurl C. Callaway

      IRS Identification Nos. of above persons (entities only):

2.    Check the appropriate box if a Member of a Group (see instructions):

      (a)   [X]

      (b)   [ ]

3.    SEC use only:

      __________________________________________________________________________

4.    Source of funds (see instructions): PF

5.    Check if disclosure of legal proceedings is required pursuant to Items
      2(d) or 2(e): [ ]

6.    Citizenship or Place of Organization:  U.S.

Number of shares beneficially owned by each reporting person with:

      7.    Sole Voting Power             0

      8.    Shared Voting Power           1,800

      9.    Sole Dispositive Power        1,800

      10.   Shared Dispositive Power      0

11.   Aggregate amount beneficially owned by each
      reporting person:                         1,800

12.   Check box if the aggregate amount in Row 11 excludes certain shares (see
      instructions):                                          [ ]

13.   Percent of class represented by amount in Row 11:       0.0% (Less than
                                                                    1/10 of one
                                                                    percent)

14.   Type of reporting person (see instructions):            IN

                                      1-HHH
<PAGE>
This Amendment No. 2 to the Schedule 13D dated April 27, 2000 and filed on April
28, 2000, and amended by Amendment No. 1 dated May 21, 2000 and filed May 25,
2000, hereby amends and restates the entire Schedule 13D as follows:

Item 1.  Security and Issuer.

The security to which this statement relates is the common stock, par value
$1.00 per share (the "Common Stock"), of OEC Compression Corporation, an
Oklahoma corporation (the "Company"). The principal offices of the Company are
located at 2501 Cedar Springs Road, Suite 600, Dallas, Texas 75201.

Item 2.  Identity and Background.

The original Schedule 13D was filed by the Shareholder Preservation Committee
comprised of Dennis W. Estis ("Estis"), Robert P. Gregory, Jr. ("Gregory"), Don
E. Smith ("Smith"), and Charles M. Butler, III ("Butler") (collectively referred
to as the "Initial Filing Group"). On April 27, 2000, each member of the Initial
Filing Group entered into a Shareholders' Agreement effective April 27, 2000,
described below in Item 6 and attached as an exhibit (the "Shareholders'
Agreement"), granting Estis an irrevocable proxy to vote their shares of Common
Stock for the election and removal of directors at the next annual or special
meeting of shareholders. Subsequently, between May 17 and May 30, 2000, the
following persons executed joinders to the Shareholder's Agreement, forms of
which are attached hereto as exhibits: Frank W. Gagliardi, David F. Sahler,
Danny A. Nicos, Walter E. Fischer III, Tommy Preston Nicar, Robert Michael
Scott, Robert T. Yount, Brian L. Fuller, Clifford A. Ware, Joseph E. McReynolds,
Michael W. Balcar, Jr., Energy Equipment Service, Inc., Shelton R. and Mary
Smith, Troy and Sue Jones, Kathy Branch, Robert L. Humphrey, Paulette C.
Humphrey, Boyd B. Badley, Jr., Stanley E. Bennett, Joe E. Hicks, Jr., James M.
Neher, T. B. Polk, Edward E. Smith, Garland D. Upton, Michael T. Weaver, Leonard
A. Woodall, Moses L. Beasley, Jeremiah C. Young, Gary D. Spurlock, Timothy T.
Causey, Jeffrey W. DeLancey, Albert R. Sones, Terry M. Jones, Gary M. Thornhill,
Clayton Burge, Ricky L. Hatton, Benjamin L. Sanders, Willie A. Sanders, Susan R.
Ross, Enos R. Jenkins, Benjamin S. Watson, Jason Anderson, Stevie D. and Glenda
Anderson, Celina M. Anderson, David L. Parsons, Carroll G. Broome, Lucille
Wiggins, Robert W. Morgan, Richard E. Hammons, Howard R. Broome, David L.
Merchant, Charles M. Smith, Bud W. Langston, James N. Lowery and Lurl C.
Callaway.

These persons, together with the members of the Initial Filing Group, are
collectively referred to as the "Filing Group."

The members of the Filing Group are filing this statement as they may be deemed
to be a "group" within the meaning of Section 13(d)(3) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"). Except as expressly
otherwise set forth in this statement, each member of the Filing Group disclaims
beneficial ownership of the shares of Common Stock beneficially owned by any
other member of the Filing Group or any other person. Most particularly, this
statement is being filed as a result of the granting of various irrevocable
proxies

                                       2
<PAGE>
to Estis and the entry into various other arrangements, all as set forth in the
Shareholders' Agreement.

The name, residence and business address, present principal occupation or
employment, the name, principal place of business and address of any corporation
or other organization in which such employment is carried on, and the
citizenship of each member of the Filing Group is set forth below:

Dennis W. Estis is a citizen of the U.S. His residence address is 3592 Waverly
Circle, Destin FL 32541. His business address is 106 Comanche Trail, West
Monroe, LA 71201. He is President of Bayland Industries, LLC, a construction
barge company, and is a director of the Company (2501 Cedar Springs Road, Suite
600, Dallas TX 75201).

Robert P. Gregory, Jr. is a citizen of the U.S. His business address is 7575 San
Felipe, Ste. 350 Houston, TX 77063. His residence address is 11748 Duart,
Houston, Texas 77024. He is Chairman and CEO of Gregory & Cook, Inc. (7575 San
Felipe, Ste. 350 Houston, TX 77063).

Don E. Smith is a citizen of the U.S. His business and residence address is 134
Smith Lane, Columbia, MS 39429. He is a cattle rancher, the President and
principal owner of Smith Machine Works, Inc., a Vice President and principal
owner of Laird Construction, Inc., and a director of the Company.

Charles M. Butler, III is a citizen of the U.S. His residence address is 12673
Rip Van Winkle, Houston, Texas 77024. His business address is 2121 Sage Road,
Houston, Texas 77057. He is presently self employed as a financial and
regulatory consultant and is a director of the Company.

Frank W. Gagliardi is a citizen of the U.S. His residence address is 2574 E. 139
Street S., Bixby, OK 74008. His business address is 1783 71st Street S., Tulsa,
OK. He is a self-employed geologist.

David F. Sahler is a citizen of the U.S. His residence address is 5811 S. 79th
E. Avenue, Tulsa, OK 74145. He is retired.

Danny Nicos is a citizen of the U.S. His business and residence address is 1916
Kristi Lane, Weatherford, OK. He is a supervisor for the Company.

Walter Ernest Fischer III is a citizen of the U.S. His residence address is
Route 4, Box 245 D, Alice, TX 78332. His business address is P.O. Box 2457, West
Monroe, LA 71294. He is an assistant supervisor of the Company (P.O. Box 2457,
West Monroe, LA 71294).

Tommy P. Nicar is a citizen of the U.S. His residence address is Route 5, Box
5324-1A, Brazoria, TX. His business address is P.O. Box 2457, West Monroe, LA
71294. He is a regional manager for the Company.

                                       3
<PAGE>
Robert M. Scott is a citizen of the U.S. His residence address is 3202 E. 93rd,
Tulsa, OK 74137. His business address is 1831 E. 71st Street, Suite 135, Tulsa,
OK 74136. He is a manager for the Company.

Robert T. Yount is a citizen of the U.S. His residence address is 3614 Rushing,
Corpus Christi, TX 78410. His business address is P.O. Box 2457, West Monroe, LA
71294. He is employed by the Company.

Brian L. Fuller is a citizen of the U.S. His business and residence address is
11106 Cornelison, Wichita, KS 67212. He is a supervisor for the Company.

Clifford A. Ware is a citizen of the U.S. His residence address is 2312 West
Avenue K, San Angelo, TX 76902. His business address is Box 5376, San Angelo, TX
76902. He is a plant supervisor for the Company.

Joseph E. McReynolds is a citizen of the U.S. His business and residence address
is P.O. Box 1031, Sondra, TX 76950. He is an assistant manager for Area 7 of the
Company.

Michael W. Balcar, Jr. is a citizen of the U.S. His business and residence
address is 12222 Fir Lane, Pinehurst, TX 77362. He is a supervisor for the
Company.

Energy Equipment Services, Inc. is a Texas corporation whose principal business
is selling, operating and maintaining generators. Its address is P.O. Box 69184,
Odessa, TX 79769.

Shelton R. Smith and Mary Smith are citizens of the U.S. Their residence address
is 396 Prosperous Ridge, Lumberton, MS 39429. Sheldon Smith is employed as a
shop foreman with Smith Machine Works (214 S. High School Ave., Columbia MS
39429). Kathy Smith is employed as a registered nurse at Forrest General
Hospital (6051 Highway 49, Hattiesburg, MS 39401).

Troy Jones and Sue Jones are citizens of the U.S. Their residence address is 51
Pierce Road, Columbia, MS 39429. They are both retired.

Kathy Branch is a citizen of the U.S. Her residence address is 19 Turnage Chapel
Road, Foxworth, MS 39483. Her business address is P.O. Box 757, Prentiss, MS
39747. She is a secretary with B & P Swab Services, Inc. (P.O. Box 757,
Prentiss, MS 39747).

Robert L. Humphrey is a citizen of the U.S. His residence address is 8406
Hanley, Houston, TX 77040. His business address is 6911 Satsuma, Houston, TX
77041. He is self-employed as a used equipment salesperson.

Paulette Humphrey is a citizen of the U.S. Her residence address is 8406 Hanley,
Houston, TX 77040. She is self-employed as a used equipment salesperson.

                                       4
<PAGE>
Boyd B. Badley, Jr. is a citizen of the U.S. His residence address is 1470
Swarte Fairbanks Rd., Monroe, LA 71203. His business address is Box 2457, West
Monroe, LA 71292. He is an engineer with the Company.

Stanley E. Bennett is a citizen of the U.S. His residence address is 1816
Corley, Ruston, LA 71270. His business address is 228 Industrial, West Monroe,
LA 71292. He is a shop supervisor with the Company.

Joe E. Hicks, Jr. is a citizen of the U.S. His residence address is 5426 Highway
4, Jonesboro, LA 71251. His business address is 228 Industrial Drive, West
Monroe, LA 71294. He is a supervisor with the Company.

James M. Neher is a citizen of the U.S. His residence address is 105 Hidden
Lakes, West Monroe, LA 71291. His business address is 228 Industrial Drive, West
Monroe, LA 71294. He is an engineering manager with the Company.

T. B. Polk is a citizen of the U.S. His residence and business address is Route
No. 1, Box 117, Carson, MS 39427. He is retired.

Edward E. Smith is a citizen of the U.S. His residence address is 352 Prospres
Ridge Road, Lumberton, MS 39455. He is a truck driver for Smith Machine Works
(214 S. High School Ave., Columbia MS 39429).

Garland D. Upton is a citizen of the U.S. His business and residence address is
P.O. Box 1262, Columbia, MS 39429-1262. He is a self-employed attorney.

Michael T. Weaver is a citizen of the U.S. His residence address is 100 Hidden
Lakes Drive, West Monroe, LA 71291. His business address is 228 Industrial
Drive, West Monroe, LA 71291. He works in the purchasing department of the
Company.

Leonard A. Woodall is a citizen of the U.S. His residence address is 2416
Harvey's Barbershop Road, Dubberly, LA 71024. His business address is 228
Industrial Drive, West Monroe, LA 71291. He is a parts manager for the Company.

Moses L. Beasley is a citizen of the U.S. His residence address is 1404 Rogers
Street, Monroe, LA 71201. His business address is 228 Industrial Drive, West
Monroe, LA 71291. He works in the parts department of the Company.

Jeremiah C. Young is a citizen of the U.S. His residence address is 1202 Highway
505, Dodson, LA 71422. His business address is 228 Industrial Drive, West
Monroe, LA 71291. He works as an operator for the Company.

Gary D. Spurlock is a citizen of the U.S. His residence address is 196 McFarland
Road, Choudrant, LA 71227. His business address is 228 Industrial Drive, West
Monroe, LA 71294. He is a field service representative for the Company.

                                       5
<PAGE>
Timothy T. Causey is a citizen of the U.S. His residence address is P.O. Box 66,
Jonesboro, LA 71251. His business address is 228 Industrial Drive, West Monroe,
LA 71227. He is a field service representative for the Company.

Jeffrey W. DeLancey is a citizen of the U.S. His residence address is 256
DeLancey Robbins Rd., Columbia, MS 39429. His business address is 214 South High
School Avenue, Columbia, MS 39429. He is a field service representative for the
Company.

Albert R. Sones is a citizen of the U.S. His residence address is 3101 Hwy. 13
South, Columbia, MS 39429. His business address is P.O. Box 315, Foxworth, MS
39489. He is a carpenter with P & H Construction, a construction company.

Terry M. Jones is a citizen of the U.S. His residence address is 28 Rosebud
Lane, Columbia, MS 39429. He is a mechanic and is currently unemployed.

Gary M. Thornhill is a citizen of the U.S. His residence address is 838 Prospres
Ridge Road, Columbia, MS 39429. His business address is 214 South High School
Avenue, Columbia, MS 39429. He is a supervisor for the Company.

Clayton Burge is a citizen of the U.S. His residence address is Rt. 2, Box
240A2, Bassfield, MS 39421. His business address is 214 South High School
Avenue, Columbia, MS 39429. He is a field service representative for the
Company.

Ricky L. Hatton is a citizen of the U.S. His residence address is 45 West Lake
Road, Hattiesburg, MS 39402. His business address is 39 King Road, Hattiesburg,
MS 39402. He is a chemist with Environmental Diagnostic Laboratories, Inc. (39
King Road, Hattiesburg, MS 39402).

Benjamin J. Sanders is a citizen of the U.S. His residence address is 202
Sanders Road, Columbia, MS 39429. His business address is 214 South High School
Avenue, Columbia, MS 39429. He is a field service representative for the
Company.

Willie A. Sanders is a citizen of the U.S. His residence address is 191 Sanders
Road, Columbia, MS 39429. His business address is 214 South High School Avenue,
Columbia, MS 39429. He is a field service representative for the Company.

Susan R. Ross is a citizen of the U.S. Her residence address is 103 Bayside
Circle, West Monroe, LA 71291. Her business address is 228 Industrial, West
Monroe, LA 71292. She employed as an office worker for the Company.

Enos R. Jenkins is a citizen of the U.S. His residence address is 23280 N. Rian
Drive, Covington, LA 70435. His business address is 81880 Hwy. 41, Bush, LA
70431. He is a mail carrier employed by the U.S. Postal Service (81880 Hwy. 41,
Bush, LA 70431).

                                       6
<PAGE>
Benjamin S. Watson is a citizen of the U.S. His residence is 100 Majestic
Circle, Hattiesburg, MS 39402. His business address is 214 South High School
Avenue, Columbia, MS 39429. He is in sales/management at the Company.

Jason Anderson is a citizen of the U.S. His residence address is 1133 Prospres
Ridge Road, Columbus, MS 39429. He is a full-time student.

Stevie D. Anderson and Glenda J. Anderson are citizens of the U.S. Their
business and residence address is 1133 Prospres Ridge Road, Columbia, MS 39429.
Stevie Anderson is a self-employed welder.

Celina M. Anderson is a citizen of the U.S. Her residence address is c/o Stevie
Anderson, 1133 Prospres Ridge Road, Columbia, MS 39429. She is a housewife.

David J. Parsons is a citizen of the U.S. His residence address is 45 Piney
Woods Lane, Sumrall, MS 39482. His business address is 214 South High School
Avenue, Columbia, MS 39429. He is a controller for Smith Machine Works, Inc.

Carroll G. Broome is a citizen of the U.S. His business and residence address is
Rt. 2, Box 248A, Bassfield, MS 39421. He is a self-employed farmer.

Lucille Wiggins is a citizen of the U.S. Her residence address is 915 Elm Drive,
Columbia, MS 39429. She is retired.

Robert W. Morgan is a citizen of the U.S. His residence address is 8574 Hwy. 80,
Ruston, LA 71270. His business address is P. O. Box 1033, Ruston, LA 71273. He
is self-employed and owns Morgan Tree Services, Inc. (P. O. Box 1033, Ruston, LA
71273), a company that trims and cuts trees.

Richard E. Hammons is a citizen of the U.S. His residence address is 791 Hwy.
151, Downsville, LA 71234. His business address is 228 Industrial Drive, West
Monroe, LA 71292. He is an assistant supervisor for the Company.

Howard R. Broome is a citizen of the U.S. His residence address is 40069 Hwy. 45
South, Hamilton, MS 39746. His business address is 40080 Hwy. 45 South,
Hamilton, MS 39746. He is a supervisor for the Company.

David L. Merchant is a citizen of the U.S. His residence address is P. O. Box
1035, Sulligent, AL 35586. His business address is 40080 Hwy. 45 South,
Hamilton, MS 39746. He is a mechanic for the Company.

Charles M. Smith is a citizen of the U.S. His residence address is 349 Parra
Drive, Columbus, MS 39701. His business address is 40080 Hwy. 45 South,
Hamilton, MS 39746. He is a mechanic for the Company.

                                       7
<PAGE>
Bud W. Langston is a citizen of the U.S. His residence address is 321 Timber
Ridge Drive, Ruston, LA 71270. His business address is 228 Industrial Drive,
West Monroe, LA 71291. Mr. Langston is a regional manager for the Company.

James N. Lowery is a citizen of the U.S. His residence address is 2792 Hwy. 145,
Chodrant, LA 71227. He owns a retail establishment located at 2008 McMullen,
DuBach, LA 71235.

Lurl C. Callaway is a citizen of the U.S. His residence address is 2046 Hwy.
821, Ruston, LA 71270. He is retired.

Each member of the Filing Group affirms that during the last five years, such
person (i) has NOT been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors), or (ii) has NOT been a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such proceeding was or is subject to a judgment, decree or final
order enjoining future violations of, or prohibiting or mandating activities
subject to, federal or state securities laws or finding any violation of such
laws.

Information with respect to each member of the Filing Group is given solely by
such member and no member of the Filing Group has responsibility for the
accuracy or completeness of the information supplied by another member.

Item 3.  Source and Amount of Funds or Other Consideration.

Estis has previously filed a Schedule 13D regarding his acquisition of 5,252,177
shares of Common Stock in exchange for his stock holdings in a company, Ouachita
Energy Corp., that was merged with the Company effective August 6, 1997. Estis
actually acquired 5,252,178 shares in this merger. In January 1998, the Company
issued an additional 286,976 shares of Common Stock to Estis in settlement of a
liability to Estis which was assumed by the Company in the merger. In February
1999, Estis purchased an aircraft from the Company in exchange for delivering a
yard truck and 175,333 shares to the Company, resulting in a current ownership
of 5,363,821 Shares. Estis has not made any other sales or purchases. In May
1999, Estis was granted an option to acquire 6,666 shares of Common Stock
through the Company's Director Stock Option Plan.

Gregory acquired approximately 2,887,251 shares of Common Stock in exchange for
all stock holdings in a company that was merged with the Company and he
purchased an additional approximately 150,000 shares from another shareholder of
the Company using personal funds, both of which events occurred over three years
ago. Gregory has not made any other sales or purchases. All of Gregory's shares
are owned of record by Gregory & Cook, Inc., a Delaware corporation he controls.

Smith acquired his shares of Common Stock in exchange for all stock holdings in
a company that became a wholly-owned subsidiary of the Company in 1993 and he
exercised an option to acquire an additional 60,000 shares from the Company in
1996, using personal funds. He also

                                       8
<PAGE>
holds an option to acquire 10,000 shares at $2.31 per share that was granted in
May 1997 and an option to acquire 6,666 shares at $2.188 per share that was
granted in June 1998. Smith has sold an aggregate of 222,000 shares in the open
market from May 1997 through June 1998. He has not made any other purchases.

Butler acquired his shares of Common Stock with personal funds at various times
prior to 1995. He also holds options to acquire 29,166 shares from the Company
at various prices ranging from $.5625 to $2.31 per share that were granted in
1996, 1997, and 1998. Butler sold an aggregate of 10,000 shares in the open
market in 1997. He has not made any other purchases.

Frank Gagliardi acquired his shares of Common Stock with personal funds.

David Sahler acquired his shares of Common Stock with personal funds.

Danny Nicos acquired his shares of Common Stock through participation in the
Company's 401(k) Plan. Nicos has also been granted options to purchase 9,647
shares of Common Stock, of which 3,663 are exercisable within sixty days.

Walter Fischer acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

Tommy Nicar acquired his shares through the merger of Ouachita Energy Corp. and
the Company.

Robert Scott acquired some of his shares of Common Stock with personal funds. He
has also been granted options to purchase 108,340 shares of Common Stock, of
which 53,002 are exercisable within sixty days.

Robert Yount acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

Brian Fuller acquired his shares of Common Stock through participation in the
Company's 401(k) Plan. He has also been granted options to purchase 6,759 shares
of Common Stock, of which 1,371 are exercisable within sixty days.

Clifford Ware acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

Joseph McReynolds acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Michael Balcar acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

                                       9
<PAGE>
Energy Equipment Services, Inc. acquired its shares of Common Stock by
purchasing them with working capital.

Shelton R. Smith and Mary Smith acquired their shares of Common Stock through
personal funds, participation in the Company's 401(k) Plan, and in exchange for
stock holdings in a company that became a wholly-owned subsidiary of the Company
in 1993.

Troy Jones and Sue Jones acquired their shares of Common Stock in exchange for
stock holdings in a company that became a wholly-owned subsidiary of the Company
in 1993.

Kathy Branch acquired her shares of Common Stock in exchange for stock holdings
in a company that became a wholly-owned subsidiary of the Company in 1993.

Robert L. Humphrey acquired his shares of Common Stock with personal funds.

Paulette C. Humphrey acquired her shares of Common Stock through a property
settlement.

Boyd B. Badley, Jr. acquired his shares of Common Stock through participation in
the Company's 401(k) Plan. He has also been granted options to purchase 11,800
shares of Common Stock. The Filing Group assumes for the purposes of this filing
that all of these options have vested. The Filing Group sought information from
the Company that would enable it to calculate the vesting schedule for these
options, but was unable to obtain such information in time for this filing.

Stanley E. Bennett acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Joe E. Hicks, Jr. acquired his shares of Common Stock through participation in
the Company's 401(k) Plan. He has also been granted options to purchase 7,900
shares of Common Stock. The Filing Group assumes for the purposes of this filing
that all of these options have vested. The Filing Group sought information from
the Company that would enable it to calculate the vesting schedule for these
options, but was unable to obtain such information in time for this filing.

James M. Neher acquired his shares of Common Stock through participation in the
Company's 401(k) Plan and through personal funds. He has also been granted
options to purchase 114,072 shares of Common Stock, of which 57,259 are
exercisable within sixty days.

T. B. Polk acquired his shares of Common Stock in exchange for stock holdings in
a company that became a wholly-owned subsidiary of the Company in 1993.

Edward E. Smith acquired his shares of Common Stock in exchange for stock
holdings in a company that became a wholly-owned subsidiary of the Company in
1993.

Garland D. Upton acquired his shares of Common Stock in exchange for stock
holdings in a company that became a wholly-owned subsidiary of the Company in
1993.

                                       10
<PAGE>
Michael T. Weaver acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Leonard A. Woodall acquired his shares of Common Stock through participation in
the Company's 401(k) Plan and with personal funds. He also acquired shares in
exchange for his stock holdings in Ouachita Energy Corp. when Ouachita merged
with the Company.

Moses L. Beasley acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Jeremiah C. Young acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Gary D. Spurlock acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Timothy T. Causey acquired his shares of Common Stock through participation in
the Company's 401(k) Plan. He has also been granted options to purchase 2,400
shares of Common Stock. The Filing Group assumes for the purposes of this filing
that all of these options have vested. The Filing Group sought information from
the Company that would enable it to calculate the vesting schedule for these
options, but was unable to obtain such information in time for this filing.

Jeffrey W. DeLancey acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Albert R. Sones acquired his shares of Common Stock in exchange for stock
holdings in a company that became a wholly-owned subsidiary of the Company in
1993. His shares have been pledged as collateral for a bank loan.

Terry M. Jones acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

Gary M. Thornhill acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Clayton Burge acquired his shares of Common Stock through participation in the
Company's 401(k) Plan.

Ricky L. Hatton acquired his shares of Common Stock in exchange for stock
holdings in a company that became a wholly-owned subsidiary of the Company in
1993. 68,179 of his shares have been pledged as collateral for bank loans.

                                       11
<PAGE>
Benjamin J. Sanders acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Willie A. Sanders acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Susan R. Ross acquired her shares of Common Stock through participation in the
Company's 401(k) Plan. She has also been granted options to purchase 225 shares
of Common Stock, of which 45 are exercisable within 60 days.

Enos R. Jenkins acquired his shares of Common Stock in exchange for stock
holdings in a company that became a wholly-owned subsidiary of the Company in
1993.

Benjamin S. Watson acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Jason Anderson acquired his shares of Common Stock by gift.

Stevie D. and Glenda J. Anderson acquired their shares of Common Stock in
exchange for stock holdings in a company that became a wholly-owned subsidiary
of the Company in 1993.

Celina M. Anderson acquired her shares of Common Stock by gift.

David J. Parsons acquired his shares of Common Stock through participation in
the Company's 401(k) Plan and through personal funds.

Carroll G. Broome acquired his shares of Common Stock through participation in
the Company's 401(k) Plan and through personal funds. He was also granted an
option to purchase 75,000 shares of Common Stock, of which 15,000 are
exercisable within sixty days. He sold 2,500 shares of Common Stock on April 27,
2000 through Southwest Securities at a price of .8125 per share.

Lucille Wiggins acquired her shares of Common Stock with personal funds.

Robert W. Morgan acquired his shares of Common Stock with personal funds.

Richard E. Hammons acquired his shares of Common Stock through participation in
the Company's 401(k) Plan. He has also been granted options to purchase 906
shares of Common Stock. The Filing Group assumes for the purposes of this filing
that all of these options have vested. The Filing Group sought information from
the Company that would enable it to calculate the vesting schedule for these
options, but was unable to obtain such information in time for this filing.

                                       12
<PAGE>
Howard R. Broome acquired his shares of Common Stock through participation in
the Company's 401(k) Plan. He has also been granted options to purchase 1,255
shares of Common Stock. The Filing Group assumes for the purposes of this filing
that all of these options have vested. The Filing Group sought information from
the Company that would enable it to calculate the vesting schedule for these
options, but was unable to obtain such information in time for this filing.

David L. Merchant acquired his shares of Common Stock through participation in
the Company's 401(k) Plan.

Charles M. Smith acquired his shares of Common Stock through participation in
the Company's 401(k) Plan and through personal funds. He has also been granted
options to purchase 974 shares of Common Stock, of which 194 are exercisable in
sixty days.

Bud W. Langston acquired his shares of Common Stock through participation in the
Company's 401(k) Plan and through personal funds. Mr. Langston has also been
granted options to purchase 4,751 shares of Common Stock, of which 1,849 are
exercisable in sixty days.

James N. Lowery acquired his shares of Common Stock with personal funds.

Lurl C. Callaway acquired his shares of Common Stock with personal funds.

All of the shares of Common Stock presently owned by members of the Filing Group
are subject to a Shareholders' Agreement described in Item 6 and attached hereto
as an exhibit. The source for capital contributions from each of the members of
the Filing Group was working capital or personal funds.

Item 4.  Purpose of Transaction.

Since August 1997, Estis has been a director of the Company. He acquired most of
his shares of the Company's Common Stock in connection with the Company's August
1997 acquisition of Ouachita Energy Corp., which he founded in 1976. Since
August 1997 Estis has held his shares for investment only. As a result of a
serious deterioration in the liquidity and price of the Company's Common Stock
during 1998, Estis decided to review his investment objectives and inquired
whether other significant shareholders were becoming concerned about their
investment in the Company. On November 9, 1998 the members of the Initial Filing
Group (except Mr. Butler) agreed that Estis should approach the management of
the Company with a view to discussing with management specific steps assisting
the Company to increase shareholder value. They also agreed to enter into a
shareholders' agreement, granting irrevocable proxies to Estis, among other
things. Effective December 16, 1998, the Company, Estis and the parties to the
original Shareholders' Agreement settled their disputes and Estis was terminated
as chief operating officer of the Company. In connection with the settlement,
Estis's original 13D filing was amended and the settlement agreement and
original shareholders' agreement were described

                                       13
<PAGE>
and filed with the Commission. That shareholders' agreement terminated by its
terms on December 31, 1999.

Following action by the Board of Directors of the Company to schedule an annual
meeting of shareholders for June 13, 2000, on April 19, 2000, Estis approached
the other members of the Initial Filing Group, noting the continued decline in
the price of the Company's common stock and the limited financial capability of
the Company. As a result, the parties to the original shareholders' agreement
and Mr. Butler joined in a new Shareholders' Agreement dated April 27, 2000, and
formed a group seeking to obtain proxies to vote in favor of an entirely new
slate of directors for the Company. The Shareholders' Agreement is described in
Item 6 and attached as an exhibit. The members of the Initial Filing Group also
entered a letter agreement among themselves agreeing to contribute to the costs
of nominating and electing the persons nominated pro rata in accordance with
their respective stock ownership in the Company. That agreement is also
described in Item 6 and attached as an exhibit.

On April 27, 2000 the Initial Filing Group delivered a letter to Jack D.
Brannon, Secretary of the Company, and Ray C. Davis, the Chairman of the Board
and Co-CEO of the Company and member of the Executive and Audit Committees of
the Board. This letter set forth the Initial Filing Group's nominees for the
election of directors at the annual meeting of shareholders of the Company to be
held June 13, 2000, along with information concerning each nominee as required
by the Company's Bylaws. That letter and information on the nominees is attached
as an exhibit.

On May 15, 2000, the Initial Filing Group filed a definitive Schedule 14A with
respect to their efforts to nominate directors for election at the annual
meeting and to solicit proxies sufficient to obtain election of such nominees to
the Company's Board of Directors.

Item 5.  Interest in Securities of the Issuer.

(a) At the date of this filing, according to the Company's most recent federal
    securities filing, the Annual Report on Form 10-K of the Company for the
    year ended December 31, 1999, there were issued and outstanding 28,986,711
    shares of Common Stock of the Company as of March 30, 2000. The number of
    shares of Common Stock beneficially owned by the members of the Filing Group
    together is 11,271,253, or 38.5% of the Company's outstanding stock.

    Pursuant to a Shareholders' Agreement, each of the Filing Group members has,
    among other things, granted to Estis an irrevocable proxy with respect to
    the voting of shares of their Common Stock with regard to the election and
    removal of directors at the next meeting. The Shareholders' Agreement is
    described in Item 6 and attached as an exhibit.

    Each of the members of the Filing Group disclaims beneficial ownership of
    the shares of the Company's Common Stock reported hereunder as beneficially
    owned by another member of the Filing Group.

                                       14
<PAGE>
(b)
                                                         SOLE         SHARED
                        SOLE VOTING   SHARED VOTING   DISPOSITIVE   DISPOSITIVE
         NAME              POWER          POWER          POWER         POWER
         ----          -------------  -------------   -----------   -----------
Dennis W. Estis            5,370,487      5,900,766     5,370,487             0
Robert P. Gregory, Jr.             0      3,037,251     3,037,251             0
Don E. Smith                       0        716,559       716,559             0
Charles M. Butler, III             0        144,166       144,166             0
Frank W. Gagliardi                 0         75,582        75,582             0
David F. Sahler                    0          6,100         6,100             0
Danny Nicos                        0         12,678        12,678             0
Walter E. Fischer, III             0          2,768         2,678             0
Tommy P. Nicar                     0        361,389       361,389             0
Robert M. Scott                    0         54,902        54,902             0
Robert T. Yount                    0          2,080         2,080             0
Brian L. Fuller                    0          3,615         3,615             0
Clifford A. Ware                   0          1,945         1,945             0
Joseph E. McReynolds               0            337           337             0
Michael W. Balcar, Jr.             0          1,050         1,050             0
Energy Equipment Sevices, Inc.     0         17,000        17,000             0
Shelton & Mary Smith               0        238,502       238,502             0
Troy & Sue Jones                   0        185,206       185,206             0
Kathy Branch                       0         36,899        36,899             0
Robert L. Humphrey                 0         14,500        14,500             0
Paulette C. Humphrey               0         12,500        12,500             0
Boyd B. Badley, Jr.                0         19,676        19,676             0
Stanley E. Bennett                 0          5,777         5,777             0
Joe E. Hicks, Jr.                  0         12,410        12,410             0
James M. Neher                     0        129,674       129,674             0
T. B. Polk                         0        130,000       130,000             0
Edward E. Smith                    0         44,030        44,030             0
Garland D. Upton                   0         32,030        32,030             0
Michael T. Weaver                  0          3,188         3,188             0
Leonard A. Woodall                 0         22,959        22,959             0
Moses L. Beasley                   0          1,683         1,683             0
Jeremiah C. Young                  0          3,905         3,905             0
Gary D. Spurlock                   0          1,162         1,162             0
Timothy T. Causey                  0          7,389         7,389             0
Jeffrey W. DeLancey                0          4,565         4,565             0
Albert R. Sones                    0         19,000        19,000             0
Terry M. Jones                     0         14,518        14,518             0
Gary M. Thornhill                  0          1,449         1,449
Clayton Burge                      0          1,431         1,431             0
Ricky L. Hatton                    0         88,179        88,179             0

                                       15
<PAGE>
                                                         SOLE         SHARED
                        SOLE VOTING   SHARED VOTING   DISPOSITIVE   DISPOSITIVE
         NAME              POWER          POWER          POWER         POWER
         ----          -------------  -------------   -----------   -----------
Benjamin J. Sanders                0          1,470         1,470             0
Willie A. Sanders                  0          2,583         2,583             0
Susan R. Ross                      0            816           816             0
Enos R. Jenkins                    0         59,500        59,500             0
Benjamin S. Watson                 0          3,620         3,620             0
Jason Anderson                     0            718           718             0
Stevie D. & Glenda Anderson        0         37,016        37,016             0
Celina M. Anderson                 0            717           717             0
David J. Parsons                   0         16,520        16,520             0
Carroll G. Broome                  0        100,936       100,936             0
Lucille Wiggins                    0         86,200        86,200             0
Robert W. Morgan                   0          7,438         7,438             0
Richard E. Hammons                 0          7,660         7,660             0
Howard R. Broome                   0          9,133         9,133             0
David L. Merchant                  0          5,218         5,218             0
Charles M. Smith                   0          1,286         1,286             0
Bud W. Langston                    0         86,081        36,081        50,000
James N. Lowery                    0          4,000         4,000             0
Lurl C. Callaway                   0          1,800         1,800             0

      Pursuant to a Shareholders' Agreement, each of the Filing Group members
      have, among other things, granted to Estis an irrevocable proxy with
      respect to the voting and exercise of voting powers related to shares of
      their Common Stock. The Shareholders' Agreement is described in Item 6 and
      attached as an exhibit.

(c)   Not applicable.

(d)   Not applicable.

(e)   Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
Securities of the Issuer.

Each member of the Filing Group has entered into the Shareholders' Agreement
effective April 27, 2000. This agreement covers all of the shares of Common
Stock that are the subject of this Schedule 13D, as well as any additional
shares the members may acquire in the future (the "Shares"). The agreement
grants Estis an irrevocable proxy to vote the Shares for the election and
removal of directors at the next annual or special meeting of shareholders. Each
member of the group also agreed not to (i) subject their Shares to any voting
trust or agreement, (ii) participate in any proxy solicitation other than as
approved by Estis, (iii) join any other "group"

                                       16
<PAGE>
other than the Filing Group, (iv) act to influence the management of the Company
other than as approved by Estis or (v) assist any other person to take any of
such actions. Each member granted Estis a limited power of attorney to execute
documents in connection with exercising the powers granted by the Shareholders'
Agreement, including making the joint filing of this Schedule 13D. The
Shareholders' Agreement terminates either upon written agreement of at least
two-thirds of the parties thereto, after the next election of directors, or on
April 20, 2001. Shares sold in a bona fide sale are no longer subject to the
Shareholders' Agreement.

Each member of the Initial Filing Group has entered into an Agreement to Share
Expenses effective April 27, 2000, and attached hereto as an exhibit. This
agreement provides that each party will pay its pro rata portion (based on its
percentage of all the parties' stock ownership in the Company) of legal,
printing, solicitation and other costs reasonably incurred in connection with
the nomination of directors for election to the Board of Directors of the
Company and the solicitation of proxies in favor of such nominees. Estis will
receive all invoices for expenses, have the invoices reviewed and approved by
Robert Gregory, and then invoice and collect the appropriate amounts from the
other parties to the agreement.

On May 25, 2000, the Initial Filing Group entered into a Limited Standstill
Agreement effective May 5, 2000 (the "Standstill Agreement"), with the Company,
Ray C. Davis, Kelcy L. Warren, Matthew S. Ramsey, Jack D. Brannon, Richard D.
Brannon, Neal A. Hawthorn, Jon P. Stephenson, HACL, Ltd., a Texas limited
partnership, and Energy Investors, a Texas joint venture. The Standstill
Agreement, attached hereto as an exhibit, was intended to ensure that the
process of selling the Company (the "Sales Process") currently underway is not
impeded by the proxy fight over the election of directors. The Standstill
Agreement provides that between May 5 and June 5, 2000, none of the parties to
the agreement shall (i) institute any litigation concerning the annual meeting
set for July 13, 2000 or the solicitation of proxies for the annual meeting, or
(ii) solicit proxies by means of newspaper ads or by means of mass or general
mailings to the shareholders of the Company. All parties agreed to support the
Sales Process. The parties also agreed that there will be weekly updates about
the Sales Process at which all directors will be invited to participate.

Item 7.  Material to Be Filed as Exhibits.

*1.   Shareholders' Agreement dated April 27, 2000, among Dennis W. Estis,
      Gregory & Cook, Inc., Don E. Smith and Charles M. Butler III (includes
      agreement concerning joint filing).

*2.   Agreement to Share Expenses dated April 27, 2000, among Dennis W. Estis,
      Gregory & Cook, Inc., Don E. Smith and Charles M. Butler III relating to
      the sharing of costs.

*3.   Letter to Ray C. Davis and Jack D. Brannon, Secretary, dated April 27,
      2000 (with copies to each member of the Board of Directors of the Company)
      and an appendix concerning information on director nominees.

                                       17
<PAGE>
*4.   Form of Limited Standstill Agreement effective May 5, 2000, among the
      Company, the Initial Filing Group, and other persons named therein.

*5.   Form of Joinder to the Shareholders' Agreement, executed by all members of
      the Filing Group other than members of the Initial Filing Group and
      members of the Filing Group whose shares are held in the Company's 401(k)
      plan.

*6.   Form of Joinder to the Shareholders' Agreement executed by members of the
      Filing Group whose shares are held in the Company's 401(k) plan, for which
      Bank of Oklahoma, Inc. is Trustee.

*     Previously filed.


After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

      JUNE 2, 2000
------------------------------------
Date

/s/ DENNIS W. ESTIS
------------------------------------
Signature

Dennis W. Estis for himself and on
BEHALF OF EACH REPORTING PERSON
------------------------------------
Name/Title

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