MONTREAL, QUEBEC--(Marketwire - June 8, 2011) - Creso Exploration Inc. ("Creso" or the "Corporation") (News - Market indicators)(OTCQX:CRXEF)(FRANKFURT:C3X) is pleased to announce the results of seven diamond drill holes totaling 2,522.6 meters completed at the Duggan Zone in the Shining Tree project in NE Ontario. The results include in DUG11-19 from 79.4 to 79.9 (0.5 meters) grading 38 g/t Au (Table 1).

The drill holes were designed to explore for high grade shoots which have been shown by previous exploration programs to be developed along a broad north-trending zone of subparallel shears (Harron and White, March 2010). Some of the higher grades reported from the drill program completed in 2007 were 17.3 g/t Au over 1 meter in D3-07 from 119.5 to 120.5 meters. Significant results included in this report are shown in Table 2.

Table 1. Drill Hole Results from the 2010-11 Program at the Duggan Zone.

The 2010 and 2011 drill program at Duggan also explored for broad zones of low grade mineralization developed between these shear zones. A review of the 2007 data (Table 2) shows several zones of broad low grade gold mineralization which were not reported in Harron and White, 2010 These lower grade zones include 21.5m of 1.30 g/t Au from 217 to 238.5m in D9-07. Also, D3-07 intercepted 75.5 m from 76.0 to 151.5m grading 1.52 g/t Au. True widths of the Duggan Zone are approximately 0.60 to 0.75 of the lengths shown in Tables 1 and 2.

Figure 1 (http://media3.marketwire.com/docs/fig%201%20pr%20june%208%202011.pdf) is a plan map which shows the location of the seven diamond drill holes completed in 2010 and 2011 as well as the drilling completed in 2007. The location of the "Duggan shear zones" is shown in red on this Figure. The zone has a strike length of nearly 750 meters. A list of significant intercepts for the 2007 drill program is shown in Table 2.

Table 2. 2007 Drill Hole results for the Duggan Zone.

Gold mineralization in the Duggan Zone, as at the Minto and Tyranite zones to the ESE, is associated with veins and veinlets of quartz, carbonate, chlorite, and variable pyrite (mostly 1-5%) that are primarily controlled by N-S to N10W shear zones. These controlling structures are evident in the airborne magnetic data, appearing as linear lows that reflect elongate patterns of alteration, principally expressed as potassium (K2O) enrichment and sodium (Na2O) depletion. The linear structures and associated alteration zones at Duggan cut the Archean-age mafic and ultramafic volcanic flows that are intruded by the multi-phased Milly Creek Stock, the composition of which varies from alkali gabbro to diorite, and locally, syenite.

The various stages of drilling at Duggan, from 2007 to the present, show a predominant N10W structure controlling variable levels of gold mineralization along nearly 750 meters of strike length (Figure 2 - http://media3.marketwire.com/docs/fig%202%20pr%20june%208%202011.pdf). The quartz-carbonate veins can exhibit narrow high grade gold signatures (38 g/t Au over 0.5m in Dug11-19 and 17.3 g/t Au over 1m in D3-07), but lower gold values of 0.5 to 1.0 g/t, and above, can be present locally in widths exceeding 50 meters.

Note that the northern extension of the Duggan zone, as determined by Dug10-13 (Figure 2) passes onto the North Duggan property, which is a joint venture with Temex Resources Corp., where Creso has earned a 75% interest. Note also that the multiple zones of gold mineralization shown to be present in Dug10-14 (Table 1) east of the main Duggan zone are likely expressions of multiple parallel N10W structures evidenced from ground-based gradient array IP/Resistivity surveys conducted by Creso.

Untested targets on the Duggan property include: 1) the southerly projection of the N10W main Duggan Zone toward the Porphyry Lake zone; 2) Multiple parallel N10W structures as determined by the gradient array grid of IP/Resistivity data; and 3) An apparent N40W-trending structure that connects the Tyranite and Duggan zones, as indicated by a linear IP/Resistivity anomaly in the gradient array survey.

The drill program is currently being completed (Press Release of May 19, 2011.) on the Tyrrell, Porphyry Lake, Hare Lake, and Matona zones in the central part of Creso's Shining Tree land package.

This Press Release has been reviewed and approved by Mr. Alex Kutah, M. Sc, P. Geo., the Qualified Person under National Instrument 43-101.

Creso Exploration gold QA/QC procedures follow standard industry practices. Sealed core boxes are transported twice daily from the drill rig to the core logging facility by qualified Creso personnel. Core is logged and prepared for sampling in a secure building. Sample intervals are selected according to geologic contacts, visible mineralization, and alteration. Drill core is cut along a center line using a typical circular rock saw designed for core cutting. Sampled core is placed into sample bags, sealed and shipped to an assay lab that follows ISO 9000 series of Quality Management standards. All samples are analyzed for gold and other trace elements at AGAT Laboratories (DUG10-13 thru -17B) or ALS Group Ltd. (DUG10-18 and DUG11-19) by standard industry procedures. These procedures include gold by fire assay-AAS finish, with follow-up gold analyses by fire assay-gravimetric finish and/or metallic screen. Multi-element analysis is done by ICP (ME-MS61) using a four-acid digestion.

Blank and certified standard samples are routinely submitted with all sample batches sent to the lab for assay. In addition, replicates, duplicates, and field duplicates are routinely included in sample batches. Samples with visible gold are analyzed with procedures designed to reduce the variability of the sample results. And finally, samples are routinely sent to other labs for additional checks.

About Creso

The Corporation's principal mining exploration holdings are located in the Shining Tree mining camp of Northern Ontario within 100 km of the Timmins and Kirkland Lake mining camps, and additional interests are held in base metal properties in Guatemala.

FORWARD-LOOKING STATEMENTS: This press release contains forward-looking statements, which address future events and conditions, which are subject to various risks and uncertainties. Actual results could differ materially from those anticipated in such forward-looking statements as a result of numerous factors, some of which may be beyond the Corporation's control. These factors include: results of exploration activities, general market and industry conditions, and other risks disclosed in the Company's filings with Canadian Securities Regulators.

Forward-looking statements are based on the expectations and opinions of the Corporation's management on the date the statements are made. The assumptions used in the preparation of such statements, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements. The Corporation expressly disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise, except as required by applicable law. Depending on exploration results and available financing, the Corporation may at any point modify the suggested work program for 2011.