Document:

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                                                                   EXHIBIT 10.58

                           ALLIS-CHALMERS CORPORATION
                            5075 Westheimer Suite 890
                              Houston, Texas 77056

                               September 29, 2004

VIA FAX AND E-MAIL SEMERSON@EMERSONIG.COM
-----------------------------------------

Steve Emerson
Emerson Investments

         RE: PRIVATE PLACEMENT OF COMMON STOCK BY ALLIS-CHALMERS CORPORATION
             ---------------------------------------------------------------

Dear Mr. Emerson:

         The purpose of this letter is to confirm that, in connection with your
investment in the Common Stock of Allis-Chalmers Corporation pursuant to the
Stock Purchase Agreement dated August 10, 2004 (the "Stock Purchase Agreement"):

   (1)   you will not be required to suspend sales of shares pursuant to the
         Registration Statement (as defined in the Stock Purchase Agreement) as
         a result of any secondary offering of shares by the Allis-Chalmers
         Corporation;

   (2)   Section 6.4 of the Stock Purchase Agreement shall not be deemed to
         reduce Allis-Chalmers Corporation's obligations under the last sentence
         of Section 6.2 of the Stock Purchase Agreement (except with respect to
         a person eligible to sell all Shares in a single transaction pursuant
         to Rule 144); and

   (3)   With respect to Section 1 of the Amendment to Stock Purchase Agreement
         dated August 10, 2004: during the referenced six month period the
         Company will not issue any rights to acquire, or enter into any
         agreement involving the issuance of, its Common Stock, unless (a) the
         transaction is one contemplated by said Section 1, i.e., the issuance
         of Common Stock or convertible securities for cash (and not the
         issuance of other types of securities or a bundle of two or more types
         of securities), or (b) the Company and you mutually agree upon the
         number of additional shares of Common Stock to be issued to

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Steve Emerson
Emerson Investments
September 29, 2004
Page 2

         you in order to achieve the objectives of said Section 1, i.e., that
         you obtain the same value for your investment as any subsequent
         investor during the six month period.

                                   Sincerely,

                                   /s/ Todd A. Seward

                                   Todd A. Seward,
                                   Chief Accounting OfficerGeraco, Inc.
(a Nevada Corporation)

Convertible Note

Geraco, Inc. a Nevada corporation ("Company") for value received hereby
promises to pay to John Chris Kirch (the "Holder") or its assignee, the sum of
Three Thousand  Dollars ($3,000.00) US, with no interest in consideration of
the conversion right and payable in accordance with the terms and conditions
set forth herein.

1)    Payment Terms:  Principal shall be all due and payable on December 31,
      2004.

2)    Right to Convert by Holder:  The Holder of this Note shall have the
      option to convert the entire amount or any portion thereof, of the
      principal of this Note into shares of common stock of the Company at a
      conversion price as hereinafter provided in Paragraph 3 below.

3)    Conversion Price:  The principal of the Note shall be converted into
      common shares of the Company (the "Converted Shares") at a share price
      equal to the "bid" price of the Company's common stock on the date of
      the conversion, or in the event the Company has no bid price, the
      principal of this Note shall be converted into 150,000 shares as an
      equity position of the Company.

4)    Conversion Date:  The Conversion Date for the Holder of the Note shall
      be anytime after December 31, 2004 but no later than December 31, 2007
      (the Holder's Conversion Period).

5)    Manner of Exercise of Conversion rights:  In order to exercise the
      conversion rights of this Note, the Holder must give notice to the
      Company at anytime during the Holder's Conversion Period of its
      intention to exercise its conversion rights.  Absent such a notice to
      the Company, the Holder's conversion rights shall expire after the
      expiration of the Holder's Conversion Period.

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6)    Prepayment:  The Company shall have the right to prepay all or any part
      of the principal of this Note without penalty.  However, in the event
      the Company elects to prepay the Note, the Holder shall have ten (10)
      days from the receipt of written notice of this prepayment election to
      exercise its conversion rights as set forth above in Paragraph 2.

7)    Default:  In the event the Company fails to pay the principal of this
      Note when due, the Holder shall have the option, after providing thirty
      (30) days written notice to the Company, to (1) declare the unpaid
      principal balance all due and payable or (2) exercise their conversion
      rights for all of the unpaid principal as set forth above in Paragraph
      2.

8)    Company to Reserve Shares:   The Company shall at all times during the
      term of this Note reserve and keep available out of its authorized but
      unissued shares, such amount of its duly authorized shares of common
      stock as shall be necessary to effect the conversion of this Note.

9)    Notices:  All notices given pursuant to this Note must be in writing and
      may be given by (1) personal delivery, or (2) registered or certified
      mail, return receipt requested, or (3) via facsimile transmission.

10)   Arbitration:  The parties hereby submit all controversies, claims and
      matters of difference arising out of the Note to arbitration in Utah.
      This submission and agreement to arbitrate shall be specifically
      enforceable.

IN WITNESS WHEREOF, the Company has caused this Note to be executed by its
duly authorized officer.

                                 Geraco, Inc.

                                 /s/ Gerald Curtis
Dated: 5-10-2004             By:  ________________________________Geraco, Inc.
(a Nevada Corporation)

Convertible Note

Geraco, Inc. a Nevada corporation ("Company") for value received hereby
promises to pay to Howard E. Abrams (the "Holder") or its assignee, the sum of
Two Thousand, Two Hundred, Ninety Six Dollars ($2,296.00) U.S., with no
interest in consideration of the conversion right and payable in accordance
with the terms and conditions set forth herein.

Payment Terms:  Principal shall be all due and payable on December 31, 2004.

Right to Convert by Holder:  The Holder of this Note shall have the option to
convert the entire amount or any portion thereof, of the principal of this
Note into shares of common stock of the Company at a conversion price as
hereinafter provided below.

Conversion Price:  The principal of the Note shall be converted into common
shares of the Company (the "Converted Shares") at a share price equal to the
"bid" price of the Company's common stock on the date of the conversion, or in
the event the Company has no bid price, the principal of this Note shall be
converted into 220,000 shares as an equity position of the Company.

Conversion Date:  The Conversion Date for the Holder of the Note shall be
anytime after December 31, 2004 but no later than December 31, 2007 (the
Holder's Conversion Period).

Manner of Exercise of Conversion rights:  In order to exercise the conversion
rights of this Note, the Holder must give notice to the Company at anytime
during the Holder's Conversion Period of its intention to exercise its
conversion rights.  Absent such a notice to the Company, the Holder's
conversion rights shall expire after the expiration of the Holder's Conversion
Period.

Prepayment:  The Company shall have the right to prepay all or any part of the
principal of this Note without penalty.  However, in the event the Company
elects to prepay the Note, the Holder shall have ten (10) days from the
receipt of written

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notice of this prepayment election to exercise its conversion rights as set
forth above.

Default:  In the event the Company fails to pay the principal of this Note
when due, the Holder shall have the option, after providing thirty (30) days
written notice to the Company, to (1) declare the unpaid principal balance all
due and payable or (2) exercise their conversion rights for all of the unpaid
principal as set forth above.

Company to Reserve Shares:   The Company shall at all times during the term of
this Note reserve and keep available out of its authorized but unissued
shares, such amount of its duly authorized shares of common stock as shall be
necessary to effect the conversion of this Note.

Notices:  All notices given pursuant to this Note must be in writing and may
be given by (1) personal delivery, or (2) registered or certified mail, return
receipt requested, or (3) via facsimile transmission.

Arbitration:  The parties hereby submit all controversies, claims and matters
of difference arising out of the Note to arbitration in Utah.  This submission
and agreement to arbitrate shall be specifically enforceable.

IN WITNESS WHEREOF, the Company has caused this Note to be executed by its
duly authorized officer.

                                         Geraco, Inc.

                                          /s/ Gerald Curtis
Dated: 10-06-2003                    By:  ________________________________
                                          Gerald Curtis, PresidentExhibit 4.1  

SPECIMEN
COMMON STOCK CERTIFICATE 

	COMMON STOCK	 	 	 	COMMON STOCK
	

[GRAPHIC]	
 	

[WEIDA LOGO]	
 	

[GRAPHIC]
	

NUMBER	
 	

 	
 	

NUMBER
	

WCI	
 	

WEIDA COMMUNICATIONS, INC.	
 	

 
	

INCORPORATED UNDER THE LAWS OF THE STATE OF NEW JERSEY	
 	

 	
 	

SEE REVERSE FOR CERTAIN DEFINITIONS
	

 	
 	

 	
 	

CUSIP 948599 10 5

THIS
IS TO CERTIFY THAT 

is
the owner of 

FULLY
PAID AND NON-ASSESSABLE SHARES, NO PAR VALUE, OF THE CAPITAL STOCK OF 

WEIDA
COMMUNICATIONS, INC. 

[GRAPHIC] 

transferable
only on the books of the Corporation by the holder hereof in person or by duly authorized Attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid
unless countersigned by the Transfer Agent. 

        WITNESS
the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 

        Dated:

	 	 	[GRAPHIC]	 	 
	

/s/  JOSEPH ZUMWALT      
 SECRETARY	
 	

 	
 	

/s/  MITCHELL SEPANIAK      
 CHAIRMAN

COUNTERSIGNED:

NORTH
AMERICAN TRANSFER CO.

(FREEPORT, NEW YORK 11520) 

        TRANFER
AGENT 

        AUTHORIZED
SIGNATURE 

1

 

        The
following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or
regulations: 

	TEN COM	 	—	 	as tenants in common	 	UNIF GIFT MIN ACT-	 	Custodian	 
	 	 	 	 	 	 	 	
	 	

	TEN ENT	 	—	 	as tenants by the entireties	 	 	(Cust)	 	(Minor)
	JT WROS	 	—	 	as joint tenants with right of survivorship and not as tenants in common	 	under Uniform Gifts to Minors

Act                                    

(State)

Additional abbreviations may also be used though not in the above list. 

For
value received,                          hereby sell, assign and transfer unto 

PLEASE
INSERT SOCIAL SECURITY OR OTHER

    IDENTIFYING NUMBER OF ASSIGNEE 

Please print or typewrite name and address including postal zip code of assignee 

	    
	 	Shares

represented
by the within Certificate, and do hereby irrevocable constitute and appoint 

        Attorney
to transfer the said shares on the books of the within-named Company with full power of substitution in the premises. 

	 	 	    
	Shares

Dated,

	 	 	 	 	

	 	 	NOTICE:	 	THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

	Signature(s) Guaranteed:	 	 	 	 
	

 	
 	

 	
 	

 
	
 THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBRO- KERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE
GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.	 	 	 	 

2

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