Document:

Amendment No. 2 to the Employment Agreement Dated August 1, 2003 with Elena
      Pochapski

Exhibit
    10.34

    Priviledged
      and Confidential

    

    April
      2,
      2007

    AMENDMENT
      2 TO THE

    EMPLOYMENT
      AGREEMENT DATED AUGUST 1, 2003

    

    By
      and
      between Siberian Energy Group Inc., a Nevada corporation (the “Company”), and
      Elena Pochapski (“Employee”) made effective as of April 1, 2007. 

    

    WHEREAS
      the Corporation and the Employee
      previously signed the Amendment to the Employment Agreement, which stated the
      temporary annual salary of the Employee; 

    

    AND
      WHEREAS the Corporation and the Employee wish
      to
      determine the amount of compensation for the period starting April 1,
      2007,

    

    NOW
      THEREFORE THIS AGREEMENT WITNESSETH,
      that
      the Company and the Employee agree as follows:

    

    Point
      2.1
      of the Amendment to the Employment agreement to be revised and annual salary
      of
      the Employee returned to the regular amount as per point 5.1.1 of the Employment
      Agreement dated August 1, 2003, which is stated as US$75,000.

    

    Monthly
      salary will be paid in Canadian dollars from the bank account of Siberian Energy
      Group Inc.(Canada). For convenience of calculation of tax withholdings the
      exchange rate will be fixed at 1.15CDN/USD until December 31, 2007, at which
      date Canadian dollar amount will be recalculated to reflect the actual average
      exchange rate for 2007, but will not be below 1.00 CDN/USD.

    

    All
      other
      provisions of the Employment Agreement dated August 1, 2003 and Amendment to
      the
      Employment Agreement of August 15, 2005 remain without change.

    
 

    IN
      WITNESS WHEREOF, the parties have caused this agreement to be executed the
      day
      and year first above written.

    

    

    
      	
              EMPLOYEE

            	
              COMPANY

            

    

     

     

    

    
      	/s/
              Elena Pochapski	/s/
              David Zaikin 
	
              Elena
                Pochapski,

            	
              David
                Zaikin,

            
	
              Address:
                152 Mullen Drive,

            	
              Chairman
                and CEO

            
	
              Thornhill,
                ON, L4J 2V3

            	
              Siberian
                Energy Group Inc.Amendment Letter of Intent between Samarium and Cryobanks

Exhibit
    10.23
    SAMARIUM
      TECHNOLOGY GROUP, LTD.

    

    LETTER
      OF INTENT

    

    Cryobanks
      International, Inc.

    

    
      	
              PERSONAL
                AND CONFIDENTIAL

            

    

    

    Cryobanks
      International, Inc.

    270
      S.
      North Lake Blvd.

    Altamonte
      Springs, Florida 32701

    

    This
      letter shall confirm that, pursuant to the terms of that certain Letter of
      Intent dated January 31, 2007, and executed by Samarium on 13 February 2007,
      and
      delivered to Cryobanks on or about 28 February 2007 (the “Letter of Intent”),
      the parties thereto have agreed that Samarium shall have until 15 June 2007
      to
      complete its due diligence. All other terms are to remain in full force and
      effect.

    

    

    

    
      	 	
              Sincerely,

            
	
              AGREED
                TO AND ACCEPTED:

            	 
	 	 
	
              Cryobanks
                International, Inc.

            	
              Samarium
                Technology Group, Ltd.

            
	 	 
	 	 
	
              By:/s/
                Dwight Brunoehler

            	
              By: /s/
                Volkmar Hable

            
	
              Name:Dwight
                Brunoehler

            	
              Name: Volkmar
                Hable

            
	
              Title:
                 CEO 

            	
              Title:

            
	
              Date:
                5-11-07

            	
              Date:
                11-May-07EX-10.1

AMENDMENT AGREEMENT

This Amendment Agreement dated as of May 9, 2007 (this “Amendment”) is among (i) THE
WILLIAMS COMPANIES, INC., a Delaware corporation (“TWC”), WILLIAMS PARTNERS L.P., a
Delaware limited partnership (“MLP”), NORTHWEST PIPELINE CORPORATION, a Delaware
corporation (“NWP”), TRANSCONTINENTAL GAS PIPE LINE CORPORATION, a Delaware corporation
(“TGPL”, and together with TWC, MLP and NWP, the “Borrowers”), (ii) the banks,
financial institutions and other institutional lenders (“Banks”) that are parties to the
Credit Agreement dated as of May 1, 2006 (the “Credit Agreement”) among the Borrowers, the
Banks, CITIBANK, N.A., BANK OF AMERICA, NATIONAL ASSOCIATION and JPMORGAN CHASE BANK, N.A. (each,
an “Issuing Bank", and collectively, the “Issuing Banks”), and CITIBANK, N.A., as
administrative agent (the “Agent”) under the Credit Agreement, (iii) the Agent, and (iv)
the Issuing Banks. In consideration of the mutual promises contained herein, the Borrowers, the
Banks, the Agent and the Issuing Banks agree as set forth herein.

Section 1. Amendments to Credit Agreement. The Credit Agreement is hereby
amended as follows:

Section 1.1. Section 1.01. Section 1.01 of the Credit Agreement is hereby
amended by amending the definitions of “Rating Category” and “Termination Date” to read as follows:

"Rating Category” means, as to any Borrower, the relevant category (designated
as a “Level” followed by a Roman numeral) applicable to such Borrower from time to time as
set forth on Schedule IV, which is based on the ratings (or lack thereof) of such Borrower’s
senior unsecured long-term debt by S&P or Moody’s. In the event there is a split between
the ratings of any Borrower’s senior unsecured long-term debt by S&P and Moody’s, “Rating
Category” shall be determined based on the lower rating of such Borrower’s senior unsecured
long-term debt by S&P or Moody’s; provided that if such Borrower’s rating is BB- or
higher from S&P and Ba3 or higher from Moody’s and there is a split between the two ratings,
the pricing for such Borrower will be based on (i) if the split is one subgrade, the higher
rating and (ii) if the split is more than one subgrade, the rating that is one subgrade
below the higher rating. For example, if S&P rates the senior unsecured long-term debt of a
Borrower BB+ and Moody’s rates such debt B2, then Level VI on Schedule IV shall apply to
such Borrower. For the avoidance of doubt (x) if there is a split between Level I and Level
III, then Level I shall apply and (y) if the applicable Borrower’s rating is BB- or higher
from S&P and Ba3 or higher from Moody’s and if there is a split between Level I and Level
IV, V or VI, then Level III shall apply.

"Termination Date” means the earlier of (i) May 1, 2012 or (ii) the date of
termination in whole of the Commitments pursuant to Section 2.4 or 6.1.

Section 1.2. Schedule IV. Schedule IV of the Credit Agreement is hereby
amended by deleting it in its entirety and replacing it with Schedule IV attached hereto.

Section 2. Miscellaneous.

Section 2.1. Amendments, Etc. No amendment or waiver of any provision of
this Amendment, nor consent to any departure by any Borrower therefrom, shall in any event be
effective unless effected in accordance with Section 8.1 of the Credit Agreement.

Section 2.2. Governing Law. This Amendment and the Credit Agreement as
amended hereby shall be governed by, and construed in accordance with, the laws of the State of New
York.

1

Section 2.3. Preservation. Except as specifically modified by the
terms of this Amendment, all of the terms, provisions, covenants, warranties and agreements
contained in the Credit Agreement, any Credit Document or any other document executed in connection
with or pursuant to the Credit Agreement remain in full force and effect. Capitalized terms used
herein that are not defined herein and are defined in the Credit Agreement, as amended hereby, are
used herein as defined in the Credit Agreement, as amended hereby. Each reference to the Credit
Agreement in any Credit Document or other document executed in connection with or pursuant to the
Credit Agreement shall mean and be a reference to the Credit Agreement as amended hereby.

Section 2.4. Execution in Counterparts. This Amendment may be executed in
any number of counterparts and by different parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken together shall constitute
one and the same agreement.

Section 2.5. Representations and Warranties. Each Borrower hereby
represents and warrants to the Agent, the Issuing Banks and the Banks that:

(a) The execution, delivery and performance by such Borrower, the performance of the Credit
Agreement as amended hereby by such Borrower and the consummation of the transactions contemplated
hereby or thereby are within such Borrower’s corporate, limited partnership or limited liability
company powers, have been duly authorized by all necessary corporate, limited partnership or
limited liability company action, require no material authorization, approval or other action by,
or notice to or filing with, any governmental authority or regulatory body, do not contravene (i)
such Borrower’s charter, by-laws or formation agreement or (ii) law or any restriction under any
material agreement binding on or affecting such Borrower and will not result in or require the
creation or imposition of any Lien prohibited by the Credit Agreement.

(b) this Amendment has been duly executed and delivered by such Borrower,

(c) this Amendment and the Credit Agreement, as amended hereby, constitute legal, valid and
binding obligations of such Borrower, enforceable against such Borrower in accordance with their
respective terms, except as such enforceability may be limited by any applicable bankruptcy,
insolvency, reorganization, moratorium or similar law affecting creditors’ rights generally and by
general principles of equity,

(d) the representations and warranties contained in Section 4.1 of the Credit Agreement, as
amended hereby, and each of the representations and warranties contained in any other Credit
Document, in each case made by such Borrower as to itself and to its Subsidiaries only, are correct
in all material respects on and as of the date hereof as though made on and as of the date hereof
(unless such representation and warranty speaks solely as of a particular date or a particular
period, in which case, as of such date or for such period),

(e) no event has occurred and is continuing or would result from the transactions contemplated
hereby, which constitutes a Default or an Event of Default, and

(f) after giving effect to this Amendment, such Borrower will be in compliance with each
proviso set forth in Section 2.1(a) of the Credit Agreement and the first proviso set forth in
Section 2.1(b) of the Credit Agreement.

Section 2.6. Bank Credit Decision. Each of the Banks and Issuing Banks
acknowledges that it has, independently and without reliance upon the Agent, any Issuing Bank or
any other Bank and based on such documents and information as it has deemed appropriate, made its
own credit analysis and decision to enter into this Amendment and to agree to the various matters
set forth herein. Each of the Banks and Issuing Banks also acknowledges that it will,
independently and without reliance upon the Agent, any Issuing Bank or any other Bank and based on
such documents and information as it shall deem appropriate at the time, continue to make its own
credit decisions in taking or not taking any action under the Credit Agreement as amended hereby.

Section 2.7. Effectiveness. This Amendment shall become effective as of the
date first written above (the “Amendment Effective Date”) only upon the satisfaction of all
of the following conditions precedent:

(a) Execution of (i) this Amendment by each of the Banks, the Agent, the Issuing Banks and
the Borrowers and (ii) the Acknowledgment and Consent attached to this Amendment by each of TWC and
Pipeline Holdco. Delivery of an executed signature page to this Amendment or the Acknowledgement
and Consent by telecopier shall be as effective as delivery of a manually executed counterpart of
this Amendment or Acknowledgement and Consent, as applicable.

(b) The Agent shall have received certified copies of the resolutions of the Board of
Directors, or an authorized committee thereof or other relevant Person, of each Borrower and
Pipeline Holdco authorizing in the case of each Borrower, the execution of this Amendment, and in
the case of TWC and Pipeline Holdco, the Acknowledgement and Consent attached hereto.

(c) The Agent shall have received a certificate of each Borrower and Pipeline Holdco, signed
on behalf of such Borrower or Pipeline Holdco, as applicable, by an Authorized Officer thereof,
dated as of the Amendment Effective Date (the statements made in which certificate shall be true on
and as of the Amendment Effective Date), certifying as to (i) the absence of any amendments to the
charter or other organizational documents of such Person not included in the certificate previously
delivered to the Agent pursuant to Section 3.1(d) of the Credit Agreement, (ii) the due
incorporation or formation and good standing and valid existence of such Person as an entity
organized under the laws of the jurisdiction of its incorporation or organization and (iii) the
signature and incumbency certificate of each such Person, in each case as delivered to the Agent on
the Effective Date of the Credit Agreement, is in full force and effect and has not been amended or
modified in any respect since such Effective Date.

(d) The Borrowers shall have paid all fees and expenses incurred by Agent’s counsel in
connection with this Amendment.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their
respective officers thereunto duly authorized, as of the date first above written.

[Remainder of this page intentionally left blank – signature pages follow]

2

BORROWERS:

THE WILLIAMS COMPANIES, INC.

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Vice President & Treasurer

	 	 	WILLIAMS PARTNERS L.P.

By: Williams Partners GP LLC, its general partner

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Treasurer

	 	 	NORTHWEST PIPELINE CORPORATION

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Assistant Treasurer

	 	 	TRANSCONTINENTAL GAS PIPE LINE CORPORATION

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Assistant Treasurer
	 
	 	 

3

	 	 	AGENT:

CITIBANK, N.A., as Agent

By: /s/Todd Mogil

Authorized Officer

ISSUING BANKS:

CITIBANK, N.A., as Issuing Bank

By: /s/Todd Mogil

Authorized Officer

BANK OF AMERICA, NATIONAL ASSOCIATION, as Issuing Bank

By: /s/Ronald E. McKaig

Authorized Officer

JPMORGAN CHASE BANK, N.A., as Issuing Bank

By: /s/Robert W. Traband

Authorized Officer

4

BANKS:

CITIBANK, N.A.

By: /s/Todd Mogil

Authorized Officer

BANK OF AMERICA, NATIONAL ASSOCIATION

By: /s/Ronald E. McKaig

Authorized Officer

JPMORGAN CHASE BANK, N.A.

By: s/Robert W. Traband

Authorized Officer

THE BANK OF NOVA SCOTIA

By: /s/Andrew Ostrov

Authorized Officer

THE ROYAL BANK OF SCOTLAND PLC

By: /s/Lucy Walker

Authorized Officer

ABN AMRO BANK N.V.

By: /s/John D. Reed

Authorized Officer

BANK OF OKLAHOMA, NA

By: /s/Robert D. Mattax

Authorized Officer

BARCLAYS BANK PLC

By: /s/Nicholas Bell

Authorized Officer

BAYERISCHE LANDESBANK

By: /s/Nikolai von Mengden

Authorized Officer

By: /s/Annette Schmidt

Authorized Officer

BNP PARIBAS

By: /s/Mark A. Cox

Authorized Officer

By: /s/Larry Robinson

Authorized Officer

CALYON NEW YORK BRANCH

By: /s/Michael D. Willis

Authorized Officer

By: /s/Page Dillehunt

Authorized Officer

LEHMAN COMMERCIAL PAPER INC.

By: /s/Frank P. Turner

Authorized Officer

MERRILL LYNCH CAPITAL CORPORATION

By: /s/Carol J.E. Feeley

Authorized Officer

MIZUHO CORPORATE BANK, LTD.

By: /s/Leon Mo

Authorized Officer

NATEXIS BANQUE POPULAIRES

By: /s/Louis P. Laville, III

Authorized Officer

By: /s/Daniel Payer

Authorized Officer

REGIONS BANK

By: /s/Amy Arvey Schroeder

Authorized Officer

ROYAL BANK OF CANADA

By: /s/Jason S. York

Authorized Officer

THE BANK OF TOKYO-MITSUBISHI UFJ, LTD.,

HOUSTON AGENCY

By: /s/Kelton Glasscock

Authorized Officer

By: /s/Jay Fort

Authorized Officer

TORONTO DOMINION (TEXAS) LLC

By: /s/Debbi L. Brito

Authorized Officer

WACHOVIA BANK, N.A.

By: /s/Paul Pritchett

Authorized Officer

WESTLB AG, NEW YORK BRANCH

By: /s/Duncan Robertson

Authorized Officer

By: /s/Thomas D. Murray

Authorized Officer

5

ACKNOWLEDGMENT AND CONSENT

To induce the Agent, the Issuing Banks and the Banks to execute the foregoing Amendment, each
undersigned Credit Party hereby (a) consents to the execution, delivery and performance of such
Amendment Agreement, (b) agrees that (1) neither any Credit Document executed by it nor any
obligation of any of the undersigned nor any right or remedy of the Agent, any Issuing Bank or any
Bank with respect to any undersigned Credit Party is released or impaired by such Amendment, and
(2) this acknowledgment and consent shall not be construed as requiring the consent or agreement of
any undersigned Credit Party in any circumstance, and (c) ratifies and confirms all provisions of
the Credit Documents executed by it.

THE WILLIAMS COMPANIES, INC.

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Vice President & Treasurer

	 	 	WILLIAMS GAS PIPELINE COMPANY, LLC

	 	 	 
	By:

	 	/s/Rodney J. Sailor
	
 
	 	 
	Name:

Title:

	 	Rodney J. Sailor

Assistant Treasurer
	 
	 	 

6

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