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File: 2013-05-08 Press Release.doc

GOLD BULLION APPOINTS NEW CFO FOR CASTLE SILVER MINES INC.

May 8, 2013 - Gold Bullion Development Corp. (TSXV: GBB) (OTCPINK: GBBFF) (the "Company" or "Gold Bullion") announces 
--->that Derrick West has resigned, effective April 30, 2013, as Chief Financial Officer of Castle Silver Mines Inc., a wh
--->olly owned subsidiary of the Company, in order to pursue other interests. The Company thanks Mr. West for his time and
---> service and wishes him well in his future endeavours.

Thomas P. Devlin, Chief Financial Officer of Gold Bullion, will assume the role of Chief Financial Officer for Castle 
--->Silver Mines Inc.

Castle Silver Mines Inc.
Castle Silver Mines Inc. was incorporated in March 2011 as a wholly-owned subsidiary of Gold Bullion, for the purpose 
--->of taking over the silver assets and exploration activities carried out by Gold Bullion, so that Gold Bullion could de
--->vote itself solely to exploration for gold.  Castle Silver Mines Inc. currently owns the Castle Silver Mine property l
--->ocated in Gowganda, Ontario.
About Gold Bullion Development Corp.
Gold Bullion Development Corp. is a TSX Venture-listed junior natural resource company focusing on the exploration and
---> development of its Granada Property near Rouyn-Noranda, Québec.  Additional information on the Company's Granada
---> gold property is available by visiting the website at www.GoldBullionDevelopmentCorp.com and on SEDAR.com.
"Frank J. Basa"

Frank J. Basa, P.Eng.
President and Chief Executive Officer

For further information contact:

Frank J. Basa, P.Eng., President and CEO at 1-514-397-4000

Neither the TSX Venture Exchange nor its Regulation Service Provider (as that term is defined in the policies of the T
--->SX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release may contai
--->n forward-looking statements including but not limited to comments regarding the timing and content of upcoming work p
--->rograms, geological interpretations, receipt of property titles, potential mineral recovery processes, etc. Forward-lo
--->oking statements address future events and conditions and therefore, involve inherent risks and uncertainties. Actual 
--->results may differ materially from those currently anticipated in such statements.