RB1 (Red Block 1)

31 Zone

The 31 Zone comprises a belt of uranium occurrences south of Donaldson Lake and extending from Emar Lake to Dubyna Lake (Cargill 1969, p.46). During the early 1950’s thirty-three radioactive occurrences were discovered in “brick-red granite." Over the next two decades, more than 50,000 metres of total drilling was performed. In addition, the zone was extensively explored via line-cutting, geological mapping and radiometric, electromagnetic and magnetometer surveying.

Historical Resources

The exploration and development program at the principle showings in the 31 Zone indicated 1.7 million pounds (most favorable) of U3O8 to a vertical depth of 600 feet. Two additional zones of inferred ore only were estimated at greater depths. These estimates were made at the end of the 1975 exploration program (Truman, Fortuna). The estimates of reserves are not compliant with the NI 43-101 requirements under sections 1.3 and 1.4 of that policy, however management believes the estimate of reserves is relevant, and did comply with the standards and industry practices at the time of reporting.

Production

Open pit methods were used to extract the near surface reserves and in 1978 an 1800 foot decline ramp was initiated, 450 feet south of Dubyna Lake. Four levels of drifting were completed at vertical depths of 90, 120, 300 and 400 feet between 1979 and June of 1982, 137,616 tones of ore, containing 250,880 kg U3O8 (553,095 lbs), were mined and processed. (Saskatchewan minerals deposits index SMDI # 1324) Estimated mill production to mine closing was 640,000 lbs of U3O8 (Eldorado Nuclear Ltd internal report, 1981). All mining and processing was stopped by June of 1982. After production ceased a 736 m x 493 m crown reserve was placed over the opening of the existing decline to monitor the area for environmental impact as part of the general decommissioning of Eldorado Nuclear Ltd operations. This crown reserve, which is still in place today, covers an undetermined amount of the existing ore body. The balance of the old mineral claims that now comprise the Red Block 1 group lapsed and the area remained dormant, with no recorded exploration activity, until re-staked in 2004 under agency agreement with S.E. Loutitt, for Red Rock Energy Inc.

21 Zone

The 21 Zone is located approximately 1,200 feet due south of Emar Lake. The 21 Zone saw drilling in the 1950’s. The results encouraged Eldorado Nuclear Ltd to re-map the entire area and drill multiple holes to further test the zone. The results are currently not publicly available.

This zone was staked in 1948 by J.D. Blec of Goldfields, for Eldorado Nuclear Ltd (1944). In 1968 a full geological reconnaissance program was conducted under the supervision of D.G. Cargill including geological mapping at a scale of 1“ = 100’. Cargill defines the surface expression of the zone as area K-260, multiple trench and sample programs are conducted. A conclusion from this work was that most radioactivity on the surface at the K-260 zone was unrelated to fractures. The 21 Zone was drilled in 1954.  Fortuna (1976) indicates that: “The 21 Zone is a breccia type, disseminated uranium deposit... the host rock is hematitized, carbonatized granite.

Historical Resources

In an internal report for Eldorado Nuclear Ltd, Fortuna (1976) estimates ore reserves are approximately 42,400 tons averaging 0.16% U3O8 at a cut-off grade of 0.07% U3O8 all lying within 150 feet of surface. Below this level Fortuna estimated 9,000 tons of 0.15% U3O8. Of significant note was his summation that: “Depth potential and potential for the zone to extend to the east exist." The estimates of reserves are not compliant with the NI 43-101 requirements under sections 1.3 and 1.4 however management believes the estimate of reserves is relevant and did comply with the standards and industry practices at the time of reporting.

Baska Uranium Mines Limited

Surface prospecting on the group in 1952-53 resulted in the discovery of numerous radioactive showings in the southern part of Baska mineral claim No. 19, adjacent to the north boundary of the property of Eldorado Nuclear Ltd in the vicinity of Schmoo Lake. Several of the most promising showings were trenched and sampled in 1954. Most of the showings consist of narrow fractures and shear zones in red quartz-feldspar-hornblende gneiss.

Reno and F Zones

Reno and F Zones are located approximately 3000 feet NW of the 31 Zone. They are composed of pitchblende bearing fractures associated with the Donaldson Lake Fault where it enters Foot Bay. Trenching, geophysical surveys and diamond drilling were done on the showings by Norcen Energy in 1978-1979. The best intersection was 0.534% U3O8 over 2.7 metres (A. Slingsby, A.T. Turner p.21). The controlling structure - the Donaldson Lake Fault - was at the time within Eldorado’s claims.

Eldorado Love Zone

The main showing on the Love Zone is about 300 feet north of the St. Louis fault near the northwest end of Flack Lake. A shear zone parallel with the St. Louis fault crosses reddish granite gneiss and contains carbonate and small amounts of pitchblende (AM Christie p.100). Three diamond drill holes, one immediately below the showing, intersected 1.5 feet grading 1.34% U3O8 (Beck p.110; Map 126B,178).

Eldorado- Emar Showings

Red amphibolite and quartz feldspar gneiss in the footwall of the St. Louis fault host several short narrow fractures contain pitchblende veinlets. Four diamond drill holes were sunk on these showings; one intersection of 0.94% U3O8 across 1 foot was obtained (Beck p110 Map 126B, 170).

©2007 Red Rock Energy Inc.

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