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RELINQUISHMENT and SURRENDER of LEASE and OPTION

Yellowcake Mining, Inc. (the “Lessee”), pursuant to a certain lease and option
agreement made between the Lessee and Beckworth Corporation (the “Lessor”) dated
December 28, 2007 (the “Lease and Option”), hereby terminates and cancels said
Lease and Option effective immediately and all rights and obligations under said
Lease and Option are hereby cancelled.

All the interests of Lessee in the property under or by virtue of the Lease and
Option are hereby absolutely extinguished effective immediately.

The Lessee hereby quits claims to the real property more particularly described
in Schedule “A” attached hereto, together with all appurtenances and water
rights incident thereto.

This agreement shall be binding upon the parties, their successors, assigns and
personal representatives.

In witness whereof, the Lessee has signed this 15th day of May, 2009.

YELLOWCAKE MINING INC.

By: /s/ William Tafuri Name: William Tafuri Title: President, CFO, Secretary and
Treasurer

PROVINCE OF BRITISH COLUMBIA )   )SS COUNTY OF ____________________ )

On this 15th day of May, 2009, there personally came before me William Tafuri,
as President and CEO of Yellowcake Mining, Inc., a Nevada corporation and
acknowledged the foregoing to be his free act and deed in his said capacity and
the free act and deed of said a Nevada corporation.

/s/ Karen Richardson

NOTARY PUBLIC

  Residing at: KAREN F. RICHARDSON     Barrister & Solicitor     800-885 West
Georgia Street     Vancouver, BC V6C 3H1     Telephone: (604) 687-5700

My Commission Expires:

My commission never expires

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Schedule “A”

Mining Properties and Disclosure of Matters Relating to Mining Properties

The Titan Claims

Legal Description:

CLAIM GROUPS AND
CLAIM NAMES
LOCATION
DATE

CMC NO. DATE
FILED
WITH BLM
CO. DOC.
NO.

DATE REC.

LOCATOR               Titan #1 Group                          
Titan #1
5-8-2007
268790
6-22-2007
775159
6-6-2007 Beckworth
Corp. Titan #2 " 268791 " 775160 " " Titan #3 " 268792 " 775161 " " Titan #4 "
268793 " 775163 " " Titan #5 " 268794 " 775164 " " Titan #6 " 268795 " 775162 "
" Titan #7 " 268796 " 775165 " " Titan #8 " 268797 " 775166 " " Titan #9 "
268798 " 775167 " " Titan #10 " 268799 " 775168 " " Titan #11 " 268800 " 775169
" " Titan #12 " 268801 " 775170 " " Titan #13 " 268802 " 775171 " " Titan #14 "
268803 " 775172 " "

Disclosure of Matters Relating to Mining Properties

Lessor’s title to the Mining Properties is expressly subject to the following
defects, encroachments, impairments or overlaps of the Mining Properties, upon
rights of others.

  1.

Overlaps of any portion of any Mining Properties upon State Lands where the
State of Colorado has the mineral interest, or upon federal lands withdrawn from
mineral entry.

  2.

Surface rights grantees, licensees and permittees of the United States and State
of Colorado, including, but not limited to grazing rights (permits or leases),
rights of ways, roads, utility corridors, and water rights recognized by the
Colorado State Engineer or reserved to the Federal Government

  3.

Rights of parties to non-locatable minerals, including but not limited to oil,
gas, coal, hydrocarbons, leaseable minerals, leaseable resources, and common
minerals

  4.

Overlaps of any claims constituting the Mining Properties, where the claim is in
itself otherwise valid except to the extent of its overlaps upon (1) other
mining claims having a valid priority of the area of the overlap, (2) patented
mineral estates, (3) State Lands or (4) federal lands not open to mineral entry
such as the lands in Atomic Energy Withdrawal areas.

  5.

Defects resulting from the location of claims within Power Site Classifications
where such claims have been relocated and have been or will be timely filed with
the Bureau of Land Management.

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