August 24, 2015 – Gold Bullion Development Corp. (TSXV: GBB) (OTCPINK: GBBFF) (the “Company” or “Gold Bullion”) is pleased to announce that it has completed a National Instrument 43 - 101 report (the “Technical Report”) on the Castle Silver Property. The Technical Report entitled “Takara Resources Inc. Castle Silver Property, Gowganda, Ontario, Canada NI 43-101 Technical Report” is dated August 21, 2015 with an effective date of July 9th, 2015. The Technical Report was prepared by Claude Duplessis, PEO of GoldMinds Geoservices Inc. This Technical Report was completed in conjunction with the acquisition by Takara Resources Inc. (TSX.V: TKK) of Gold Bullion’s wholly owned subsidiary, Castle Silver Mines Inc., as announced by the Company on April 13, 2015. Castle Silver Mines Inc. currently owns a 100% interest in the 3,300-hectare Castle Silver property, a past silver producer located near the northern Ontario community of Gowganda, 85km northwest of the historic Cobalt silver mining camp.