RVS True Gold Mining, Inc.

Riverstone Resources Inc. (TSX VENTURE:RVS)(OTCQX:RVREF)(FRANKFURT:3RV)
("Riverstone" or the "Company") is pleased to report preliminary metallurgical
results for column leach tests performed on oxidized mineralized material
representing the three major deposits on the Company's flagship Karma Gold
Project in Burkina Faso, West Africa (the "Karma Project"). The results are as
follows:




----------------------------------------------------------------------------
KCA Sample                    Crush Size    Calculated   Extracted  Duration
Number           Description    (1) (mm)    Head (g/t)    Gold (%)    (days)
----------------------------------------------------------------------------
63437          Kao Composite        25.0         1.470         95%        62
----------------------------------------------------------------------------
63492          GG1 Composite        25.0         1.189         93%        62
----------------------------------------------------------------------------
63438          GG2 Composite        25.0         1.708         90%        62
----------------------------------------------------------------------------
   (1) Nominal crush size was 25 mm, however, due to the nature of the      
       material, P80 for Kao and GG2 was 16 mm and P80 for GG1 was 8 mm     



The tests were conducted by Kappes Cassidy Associates (KCA) of Reno, Nevada, USA
under laboratory conditions using 150 mm columns over a period of 62 days
(including a 13 day rest period). The results which show gold recoveries of
greater than 90% indicate that the oxidized portion of the Karma deposit is
highly amenable to heap leach processing and suggests that the oxide resources
hosted at Karma could be developed to support a profitable, low-cost mining
operation. This possibility is currently being examined in the Company's
Preliminary Economic Evaluation of the Karma Gold Project, due to be completed
and released in August 2012.


"We are very encouraged by these high recoveries from the preliminary
metallurgical testing from the oxide material from the three main deposits,"
commented Dwayne L. Melrose, President and CEO of Riverstone. "Not only does the
oxide material have excellent recoveries but the gold recovery times were better
than anticipated." 


The Company's Karma Project has a NI 43-101 compliant in-pit Whittle indicated
resource of 1.6 million ounces of gold in 47.3 million tonnes grading 1.1 g/t
gold and an inferred resource of 0.6 million ounces of gold in 18.9 million
tonnes grading 0.93 g/t gold (see news release dated January 9. 2012 and NI
43-101 Technical Report titled "Technical Report and Resource Estimate on the
Karma Project, Burkina Faso, West Africa" filed on SEDAR (www.sedar.com)
February 23, 2012.) Since the data cut-off for the resource estimation, the
Company has already completed +85,000 metres of drilling on the Karma Project,
including approximately 54,000 metres at the Kao Deposit. It is expected that
the results of this drilling will add to the overall resources of the Karma
Project deposits.


Riverstone is active in Burkina Faso, West Africa, where it holds a portfolio of
four high quality exploration projects covering in excess of 2,000 square
kilometres. Additional information about the Company and its activities may be
found on the Company's website at www.riverstoneresources.com and under the
Company's profile at www.sedar.com. 


ON BEHALF OF THE BOARD 

Dwayne L. Melrose, President & CEO 

Giles R. Peatfield, Ph. D., P.Eng. is the Qualified Person for RVS and has
reviewed and approved the contents of this release.


Certain statements made and information contained in this news release and
elsewhere constitutes "forward-looking information" within the meaning of
Canadian securities legislation. Forward-looking statements are based on certain
assumptions and are subject to risks and uncertainties which could cause actual
events or results to differ from those reflected in the forward-looking
statements, including, without limitation, with respect to statements regarding
the updated resources estimate, the assumptions set forth in this news release
and in the Company's news release of January 9, 2012, and risks and
uncertainties relating to the interpretation of drill results and the estimation
of mineral resources, the geology, grade and continuity of mineral deposits, the
possibility that future exploration, development results will not be consistent
with the Company's expectations, accidents, equipment breakdowns, risk of
undiscovered, title defects and surface access, labour disputes, the potential
for delays in exploration activities, the potential for unexpected costs and
expenses, commodity price fluctuations, currency fluctuations, and other risks
and uncertainties, including those described under Risk Factors in each
management discussion and analysis and in the Company's annual information form
which are available under the Company's profile at www.sedar.com.
Forward-looking information is based on various assumptions including, without
limitation, the expectations and beliefs of management, the assumed long term
price of gold, that the Company will receive required permits and access to
surface rights, that the Company can access financing, appropriate equipment and
sufficient labour and that the political environment within Burkina Faso will
continue to support the development of environmentally safe mining projects.
Should one or more of these risks and uncertainties materialize, or should
underlying assumptions prove incorrect, actual results may vary materially from
those described in forward-looking statements. Accordingly, readers are advised
not to place undue reliance on forward-looking statements.

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