Mainstream Files Annual and Interim Financial Statements

TORONTO, ONTARIO--(Marketwired - May 29, 2015) - Mainstream Minerals Corporation (TSX VENTURE:MJO) (the "Company") is providing a default status report in accordance with the alternative information guidelines set out in National Policy 12-203 - Cease Trade Orders for Continuous Disclosure Defaults ("NP 12-203").

Management of the Company has been subject to a management cease trade order (the "MCTO") in respect of the securities of the Company issued by the applicable securities regulators under NP 12-203 on April 7, 2015. The MCTO resulted from the delay in filing the Company's annual financial statements and management discussion and analysis for the year ended November 30, 2014 (the "Annual Disclosure Documents") by the prescribed deadline of March 30, 2015 and the subsequent delay in filing the Company's interim financial statement and management discussion and analysis for the three month period ended February 28, 2015 (the "Interim Disclosure Documents") by the prescribed deadline of April 29, 2015.

The Company is pleased to announce that it has filed its Annual Disclosure Documents and Interim Disclosure Documents and the documents can be accessed under the Company's profile at www.sedar.com.

Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release and has neither approved nor disapproved of the contents of this press release.

This news release may contain forward-looking statements including but not limited to comments regarding the timing and content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes, etc. Forward-looking 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.