Document:

Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.28

(Euro 20,000.00)

Addendum to the loan agreement dated 15/07/2006 

Extension 

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

Represented by Managing Director 
Günter Thiemann 
Goethestrasse 61

45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 59 
45721 Haltern
am See

- in the following referred to as borrower -

Effective immediately, the loan agreement, to which this
addendum applies, is changed in § 2 paragraphs 2 and 3 as follows:

§ 2 Interest, term and repayment of loan

	 	2. 	
      The term shall be extended by 8 months and ends on
      31/03/2009.

	 	3. 	
      The loan shall be repaid on 31/03/2009 into the lender’s
      account.

All other provisions of the agreement shall remain unchanged
and valid.

Haltern, 28/06/2008

	[Signature] 	 	  
	  	 	  
	EDI Holding GmbH 	 	EDI GmbH 
	Günter Thiemann 	 	Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.33

(Euro 12,000.00)

Addendum to the loan agreement dated 20/09/2006 

Extension 

LOAN AGREEMENT

between

Mr. Dieter Thiemann 
Pöppelmannstrasse 
4 33428
Harsewinkel

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH, 
represented by
the Managing Director
 Günter Thiemann Goethestrasse 61, 45721 Haltern am
See

- in the following referred to as borrower -

The loan agreement, to which this addendum applies, shall be
extended in item 1 as follows:

The term of the loan ends on 31/03/2009. An extension by 3
months is to be renegotiated at that time. 

All other provisions of the agreement remain unchanged and
valid.

Haltern, 22/06/2008

	[Signature] 	 	[Signature] 
	  	 	  
	Borrower 	 	Lender 
	EDI Exploration Drilling International GmbH 	 	Dieter Thiemann 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.38

(3,400.00)

Addendum to the loan agreement dated 28/10/2006 

Extension 

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

Represented by Managing Director 
Günter Thiemann 
Goethestrasse

61 45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 
59 45721 Haltern
am See

- in the following referred to as borrower -

Effective immediately, the loan agreement, to which this
addendum applies, is changed in § 2 paragraphs 2 and 3 as follows:

§ 2 Interest, term and repayment of loan

	 	2. 	
      The term shall be extended by approximately 9 months and
      ends on 31/03/2009.

	 	3. 	
      The loan shall be repaid on 31/03/2009 into the lender’s
      account.

All other provisions of the agreement shall remain unchanged
and valid.

Haltern, 28/05/2008

	[Signature] 	 	  
	  	 	  
	EDI Holding GmbH 	 	EDI GmbH 
	Günter Thiemann 	 	Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.42

(Euro 2,000.00)

Addendum to the loan agreement dated 29/12/2006 

Extension 

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

Represented by Managing Director 
Günter Thiemann 
Goethestrasse 61

45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 59 
45721 Haltern
am See

- in the following referred to as borrower -

Effective immediately, the loan agreement, to which this
addendum applies, is changed in § 2 paragraphs 2 and 3 as follows:

§ 2 Interest, term and repayment of loan

	 	2. 	
      The term shall be extended by 8 months and ends on
      31/03/2009.

	 	3. 	
      The loan shall be repaid on 31/03/2009 into the lender’s
      account.

All other provisions of the agreement shall remain unchanged
and valid.

Haltern, 28/06/2008

	[Signature] 	 	  
	  	 	  
	EDI Holding GmbH 	 	EDI GmbH 
	Günter Thiemann 	 	Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.53

(Eur 10,000.00)

Addendum to the loan agreement dated 02/02/2007 

Extension 

LOAN AGREEMENT

between

Mr. Dieter Thiemann 
Pöppelmannstrasse 4 
33428
Harsewinkel

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH, 
represented by
the Managing Director 
Günter Thiemann Goethestrasse 61, 45721 Haltern am
See

- in the following referred to as borrower -

The loan agreement, to which this addendum applies, shall be
extended in item 1 as follows:

The term of the loan ends on 31/03/2009. An extension by 3
months is to be renegotiated at that time. 

All other provisions of the agreement remain unchanged and
valid.

Haltern, on 18/06/2008

	[Signature] 	 	[Signature] 
	  	 	  
	Borrower 	 	Lender 
	EDI Exploration Drilling International GmbH 	 	Dieter Thiemann 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.61

(EUR 40,000.00)

Addendum to the loan agreement dated 09/08/2007 

Extension 

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

Represented by Managing Director 
Günter Thiemann 
Goethestrasse 61

45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 59 
45721 Haltern
am See

- in the following referred to as borrower -

Effective immediately, the loan agreement, to which this
addendum applies, is changed in § 2 paragraphs 2 and 3 as follows:

§ 2 Interest, term and repayment of loan

	 	2. 	
      The term shall be extended by approximately 8 months and
      ends on 31/03/2009.

	 	3. 	
      The loan shall be repaid on 31/03/2009 into the lender’s
      account.

All other provisions of the agreement shall remain unchanged
and valid.

Haltern, 04/08/2008

	[Signature] 	 	 
	  	 	  
	EDI Holding GmbH 	 	EDI GmbH 
	Günter Thiemann 	 	Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.63

(Euro 10,000.00)

Addendum to the loan agreement dated 12/08/2007

Extension 

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

Represented by Managing Director 
Günter Thiemann 
Goethestrasse 61

45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 59 
45721 Haltern
am See

- in the following referred to as borrower -

Effective immediately, the loan agreement, to which this addendum applies, is changed in § 2 paragraphs 2 and 3 as follows:

§ 2 Interest, term and repayment of loan

	 	2. 	
      The term shall be extended by approximately 8 months and
      ends on 31/03/2009.

	 	3. 	
      The loan shall be repaid on 31/03/2009 into the lender’s
      account.

All other provisions of the agreement shall remain unchanged
and valid.

Haltern, 04/08/2008

	[Signature] 	 	 
	  	 	  
	EDI Holding GmbH 	 	EDI GmbH 
	Günter Thiemann 	 	Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]Filed by sedaredgar.com - Exploration Drilling International Inc. - Exhibit 10.79

LOAN AGREEMENT

between

EDI Exploration Drilling International Holding GmbH

represented by the Managing Director 
Günter Thiemann 
Goethestrasse
59, 45721 Haltern am See

     - in the following referred to as
lender -

and

EDI Exploration Drilling International GmbH, 
represented by
the Managing Director 
Christian Runge 
Goethestrasse 59, 46721 Haltern am
See

- in the following referred to as borrower -

§ 1 Granting of loan

	 	1. 	The lender grants the borrower a loan
      in the amount of 
	 	  	Euro 	63,950.16 
	 	  	(in words: sixty-three thousand nine
      hundred and fifty Euro) 
	 	  	  	  
		2. 	The loan shall be paid out by
      transfer into the borrower’s account at the ********* *********** ***,
      **** **** *** *** **, ******* ****** ** ** **. 

§ 2 Interest, term and repayment of loan

	 	1. 	
      The annual interest payable on the loan shall be 5.0
      %.

	 	2. 	
      The term of the loan shall be 12 months, and ends on
      30/06/2009.

	 	3. 	
      The loan shall be repaid on 30/06/2009 by transfer into
      the lender’s account.

§ 3 Early repayment

The borrower is entitled to repay the loan including
accumulated interest in one lump sum at any time before the end of the term of
the loan. A prepayment penalty shall not be due.

[File name]

1

§ 4 Extraordinary right of cancellation

The lender is entitled to recall the loan effective
immediately, if the borrowers’ financial circumstances deteriorate considerably,
thus putting the claim of repayment at risk.

§ 5 Securities

The borrower irrevocably transfers all of his claims as
managing director or shareholder from any benefits, to which he is entitled,
(salary claims, profit distributions, new shares issued, profit and loss
transfers, liquidation proceeds, etc.) to the lender.

§ 6 Supplementary agreements, amendments, severability,
executed copies

	 	i. 	
      There are no supplementary agreements. Amendments,
      additions as well as deletions, even of individual provisions of this
      agreement must be made in writing in order to be effective.

	 	 	 
	 	ii. 	
      Should individual provisions of this agreement be
      invalid, the remainder of the agreement shall not be affected. In this
      case, the parties to the agreement are required to assume that a
      replacement provision has been agreed to, which fulfils the economic
      purpose of the invalid provision as much as possible.

	 	 	 
	 	iii. 	
      This contract shall be issued in duplicate. The lender
      and the borrower shall each receive a copy signed by both parties to the
      agreement.

Haltern, on 01/07/2008

	[Signature] 	 	[Signature] 
	  	 	  
	EDI Exploration Drilling International Holding GmbH 	 	EDI Exploration Drilling International GmbH
  
	Managing Director, Günter Thiemann 	 	Managing Director, Christian Runge 
	- Lender - 	 	- Borrower - 

[File name]

2

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