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 wholly 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.