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Message: Exceed Previously Reported Grade Equivalent Results From Wheeler River
| May 25, 2009 | |
| Denison Mines Corp.: Assay Results Confirm and Significantly Exceed Previously Reported Grade Equivalent Results From Wheeler River | |
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TORONTO, ONTARIO--(Marketwire - May 25, 2009) - Denison Mines Corp. (TSX:DML) (NYSE Amex:DNN) ("Denison" or the "Company") is pleased to report that assays have been returned for the equivalent grade results announced on April 2, 2009. The assay results not only confirmed the equivalent down-hole probing results but significantly increased most grades. WR-267 previously reported equivalent grades of 15.5% eU3O8 over 2.9 metres from 408.2 metres. Split core assay grades from the same interval were 23.3% U3O8 over 3.0 metres from 405.0 metres. WR-268 previously reported equivalent grades of 12.5% eU3O8 over 2.4 metres from 409.5 metres and 2.7% eU3O8 over 0.5 metres from 416.9 metres. Split core assay results for the same intervals were 13.2% U3O8 over 3.0 metres from 409.5 metres and 3.0% U3O8 over 0.5 metres from 418.5 metres. The last hole, WR-269, originally reported equivalent grades of 9.8% eU3O8 over 1.5 metres from 407.8 metres and 2.1% eU3O8 over 1.1 m from 416.0 m. Split core assay results returned 3.5% U3O8 over 0.5 metres from 408.3 metres and 2.5% U3O8 over 1.5 metres from 415.8 metres. Due to substantial core loss from the first mineralized interval, equivalent grades will be reported for this intersection going forward. These drill holes represent the last three drill holes of the winter drilling season. The grade tabulation for all mineralized holes from the R Zone, including summer 2008 work, is shown below. -------------------------------------------------------------
Interval Grade
Hole # From To (m) (U3O8)
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WR-249 408.00 409.35 1.35 1.7%
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WR-251 386.00 388.25 2.25 0.77%
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WR-253 389.70 393.70 4.00 1.40%
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WR-253 395.30 395.80 0.50 1.75%
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WR-258 397.50 400.00 2.50 25.70%
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WR-259 397.00 401.00 4.00 19.90%
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WR-260 395.70 397.20 1.50 0.25%
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WR-261 408.50 410.00 1.50 7.40%
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WR-261 412.50 413.00 0.50 1.55%
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WR-266 414.50 415.00 0.50 7.18%
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WR-267 405.00 408.00 3.00 23.30%
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WR-268 409.50 412.50 3.00 13.20%
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WR-268 418.00 418.50 0.50 3.0%
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WR-269 408.30 408.80 0.50 3.5%
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WR-269 414.80 416.30 1.50 2.5%
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2009 Summer Exploration Program Denison is also pleased to announce that a $1.5 million (Denison's share is $900,000) summer program has been approved by the Wheeler River Joint Venture of which Denison is the operator holding a 60% interest (Cameco Corp. holds a 30% interest and JCU (Canada) Exploration Company, Limited holds the remaining 10%). The program will include at least 5,500 metres of diamond drilling and 55 line-kilometres of DC Resistivity surveys. The program is anticipated to begin around June 6, 2009. The intent of the summer program will be to extend the limits of the mineralization along the strike length as far as possible and set the stage for a vastly expanded 2010 work program. The first hole this summer will test the extreme southwest of the R Zone where WR-255 last year was lost above the unconformity in the most altered sandstone encountered to date. Subsequent holes will progress further northeast, testing for mineralization proximal to the quartzite ridge in the centre of the known zone around line 4000E. The width of this high-grade mineralization here is unknown and the optimum target, near the quartzite, still has not as yet been tested. Several holes will test extensions of the high grade mineralization centred on line 4300 E. The drilling in 2008 and 2009 has been focused on a total strike length of 680 metres. Approximately half of this zone has not as yet been drill tested and is strongly mineralized at both its northeast and southwest extremities. Significant untested potential remains outside the zone along strike. This project is located in the rich Athabasca Basin between the McArthur River and Key Lake mines. This discovery has many geological similarities to the McArthur River mineralization, but at a shallower depth, and represents one of the most significant new discoveries in the Athabasca Basin in several years. Chemical analyses were completed by SRC Geoanalytical Laboratories of Saskatoon, Saskatchewan and were a combination of geochemical and assay methods. The technical information contained in this press release related to the above described exploration activities is reported and verified by William C. Kerr, Denison's Vice President, Exploration, who is a qualified person as defined by NI 43-101. For a description of the quality assurance program and quality control measures applied by Denison, please see Denison's Annual Information Form dated March 26, 2009 filed under the Company's profile on the SEDAR website. |
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