SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                 SCHEDULE 13D/A

                                 (RULE 13d-102)

  INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) and
               AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a)
                               (Amendment No. 5)*


                                ENTRX CORPORATION
--------------------------------------------------------------------------------
                                (Name of Issuer)


                          Common Stock, $.10 par value
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    591142203
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                         Wayne W. Mills and Tamara Mills
                                 5020 Blake Road
                                 Edina, MN 55436
                              Phone: (612) 930-9453

                                 With a copy to:
                             William M. Mower, P.A.
                       Maslon Edelman Borman & Brand, LLP
                         90 South 7th Street, Suite 3300
                              Minneapolis, MN 55402
                              Phone: (612) 672-8200

--------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)


                                December 31, 2006
--------------------------------------------------------------------------------
             (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 which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box / /.

          Note: Schedules filed in paper format shall include a signed original
     and five copies of the schedule, including all exhibits. See Rule 13d-7(b)
     for other parties to whom copies are to be sent.

          *The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter disclosures provided in a prior cover page.

     The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).


                               (Page 1 of 7 Pages)




CUSIP NO. 591142194               13D                          PAGE 2 OF 7 PAGES
--------------------------------------------------------------------------------
1   NAMES OF REPORTING PERSONS/I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
    (ENTITIES ONLY)

    Wayne W. Mills
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (See Instructions)

(a) |_|

(b) |_|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   SOURCE OF FUNDS (See Instructions)

    PF
--------------------------------------------------------------------------------
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
    TO ITEM 2(d) OR 2(e)                                           [ ]
--------------------------------------------------------------------------------
6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States of America
--------------------------------------------------------------------------------
                7   SOLE VOTING POWER
  NUMBER OF
                    1,495,000
   SHARES      -----------------------------------------------------------------
                8   SHARED VOTING POWER
BENEFICIALLY        0

OWNED BY EACH  -----------------------------------------------------------------
                9   SOLE DISPOSITIVE POWER
  REPORTING
                    1,495,000
   PERSON      -----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER
    WITH            0

--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     1,495,000
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES (See Instructions)                             |X|
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     18.6%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON (See Instructions)

     IN
--------------------------------------------------------------------------------




CUSIP NO. 591142194               13D                          PAGE 3 OF 7 PAGES
--------------------------------------------------------------------------------
1   NAMES OF REPORTING PERSONS/I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
    (ENTITIES ONLY)
    Tamara Mills
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (See Instructions)

(a) |_|

(b) |_|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   SOURCE OF FUNDS (See Instructions)

    PF
--------------------------------------------------------------------------------
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
    TO ITEM 2(d) OR 2(e)                                           [ ]
--------------------------------------------------------------------------------
6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States of America
--------------------------------------------------------------------------------
                7   SOLE VOTING POWER
  NUMBER OF
                    275,000
   SHARES      -----------------------------------------------------------------
                8   SHARED VOTING POWER
BENEFICIALLY        0

OWNED BY EACH  -----------------------------------------------------------------
                9   SOLE DISPOSITIVE POWER
  REPORTING
                    275,000
   PERSON      -----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER
    WITH            0

--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     275,000
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES (See Instructions)                             |X|
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     3.4%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON (See Instructions)

     IN
--------------------------------------------------------------------------------



ITEM 1.  SECURITY AND ISSUER

      This statement relates to the common stock, $.10 par value, of Entrx
Corporation, a Delaware corporation ("Entrx"). The address of Entrx's principal
executive offices is 800 Nicollet Mall, Suite 2690, Minneapolis, MN 55402.

ITEM 2.  IDENTITY AND BACKGROUND

      This Schedule 13D is being filed by Wayne W. Mills and Tamara Mills. Mr.
Mills' business address is 2125 Hollybush Road, Medina, MN 55340. Mr. Mills is a
private investor. Ms. Mills' address is 2125 Hollybush Road, Medina, MN 55340.
Ms. Mills is a private investor. Mr. and Ms. Mills are husband and wife.
      During the last five years, neither Mr. Mills nor Ms. Mills have been (i)
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors), or (ii) 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 with respect to such laws. Both
Mr. Mills and Ms. Mills are citizens of the United States of America.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

     Not applicable.

ITEM 4.  PURPOSE OF TRANSACTION

      The Reporting Persons have not formulated any definitive plans. However,
they may from time to time acquire, or dispose of, common stock and/or other
securities of the Company if and when they deem it appropriate. The Reporting
Persons may formulate other purposes, plans or proposals relating to any of such
securities of the Company to the extent deemed advisable in light of market
conditions, investment policies and other factors. Except as indicated in this
Statement, the Reporting Persons have no current plans or proposals which would
relate to or would result in any of the matters described in subparagraphs (a)
through (j) of Item 4 of Schedule 13D.

ITEM 5.  INTEREST IN THE SECURITIES OF THE ISSUER

      a.- b. Mr. Mills owns 545,000 shares (including 400,000 shares held in an
IRA). Blake Capital Partners, LLC, a Minnesota limited liability corporation
("Blake"), owns 900,000 shares (including 500,000 shares which are pledged to
the Issuer as security for a loan). Mr. Mills is the sole officer, director, and
controlling person of Blake. Also includes options to purchase 50,000 shares
which are currently exercisable. Mr. Mills has sole voting and dispositive power
over these shares.

Ms. Mills owns 275,000 shares. Ms. Mills has sole voting and dispositive power
over these shares.

Mr. and Ms. Mills each disclaim beneficial ownership over their spouse's shares
and Ms. Mills disclaims beneficial ownership over the shares owned by Blake.

According to the most recently filed Quarterly report on Form 10-QSB of Entrx,
as of November 30, 2006, 8,001,147 shares of Entrx common stock were issued and
outstanding. Accordingly, based on such report Mr. Mills owns 18.6% of the
outstanding shares and Ms. Mills owns 3.4% of the outstanding shares.




        c. TRANSACTIONS WITHIN THE LAST 60 DAYS

Identity of Entity:  Wayne W. Mills

           None

Identity of Entity: Blake Capital Partners, LLC

          None

Identity of Entity: Tamara Mills

           None

         d. Not applicable.

         e. Not applicable.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS WITH RESPECT TO
         SECURITIES OF THE ISSUER

         Pursuant to the Non-Recourse Security And Pledge Agreement ("Pledge
Agreement") dated December 10, 2001 between Entrx (formerly known as Metalclad)
(the "Company"), Bruce H. Haglund, Esq., Blake, and Mr. Mills, Blake and Mr.
Mills have pledged 500,000 shares of Entrx stock to guarantee the Non-Recourse
Secured Note ("Note"), dated December 10, 2001, between the Company, Blake, and
Mr. Mills in the amount of $1,250,000. Under the terms of the Pledge Agreement,
Mr. Mills shall retain all voting power with respect to the pledged shares
unless and until such shares are canceled or sold pursuant to the Pledge
Agreement and/or the Note. Copies of the Pledge Agreement and the Note are
attached as Exhibits B and C, respectively, to Amendment No. 3 of the Reporting
Persons' Form 13D/A, filed December 14, 2001, and are incorporated by reference
herein.

         Except as indicated in this Statement, the Reporting Persons do not
have any contracts, arrangements, understandings, or relationships (legal or
otherwise) with any person with respect to any securities of Entrx, including
but not limited to transfer or voting of securities, finders' fees, joint
ventures, loan or option arrangements, puts or calls, guarantees of profits,
division of profits or loss, or the giving or withholding of proxies.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS

         Exhibit A.     Copy of an Agreement by and between Mr. and Ms. Mills
                        to file this Statement on Schedule 13D on behalf of
                        each of them.


                                    SIGNATURE

         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.


Dated: February 14, 2007                   /s/ Wayne W. Mills
                                        ----------------------------
                                              Wayne W. Mills



Dated: February 14, 2007                   /s/ Tamara Mills
                                        ----------------------------
                                              Tamara Mills




                                    EXHIBIT A

                                    AGREEMENT
                          TO JOINTLY FILE SCHEDULE 13D


      The undersigned hereby agree to jointly prepare and file with regulatory
authorities a Schedule 13D and any future amendments thereto reporting each of
the undersigned's ownership of securities of Entrx Corporation and hereby affirm
that such Schedule 13D is being filed on behalf of each of the undersigned.

Dated:            February 14, 2007                   /s/ Wayne W. Mills
                                                   ----------------------------
                                                          Wayne W. Mills



Dated:            February 14, 2007                   /s/ Tamara Mills
                                                   ----------------------------
                                                         Tamara Mills