THUNDER BAY, ONTARIO--(Marketwire - May 22, 2012) - Mr. Pierre Gagné is pleased to announce that two companies controlled by him (together with Mr. Gagné or any one of them individually, the "Offeror") have acquired a total of 1,316,764 units (the "Units") in the capital of Rockex Mining Corporation (TSX:RXM) ("Rockex"). Each Unit is comprised of one common share (a "Common Share") and one half of one common share purchase warrant (each whole warrant, a "Warrant"). Each Warrant entitles the holder to purchase one Common Share for $0.40 within six months after closing or for $0.60 within the next six months, subject to acceleration in certain circumstances.

As a result of this acquisition, the Offeror now owns or controls 27,673,464 Common Shares representing approximately 55.82% of the issued and outstanding Common Shares and 768,470 Warrants that, if exercised, would represent approximately 0.24% of the issued and outstanding Common Shares. In addition, the Offeror owns 400,000 stock options that, if exercised, would represent approximately 0.8% of the issued and outstanding Common Shares.

The Offeror has acquired the securities for investment purposes and has no present intention of acquiring additional securities of the Issuer (other than with respect to the possible exercise of some or all of the Warrants). Depending upon his evaluation of the business, prospects and financial condition of the Issuer, the market for the Issuer's securities, general economic and tax conditions and other factors, the Offeror may acquire more or sell some or all of his securities of the Issuer.