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Delta Uranium Establishes New Assaying Protocol: New Assays Increase Grade For First Five Drill Holes at Richard Lake Uranium Deposit
Market Wire, June, 2008
Delta Uranium Inc. ("Delta" or the "Company") (TSX: DUR) is pleased to announce that, as a consequence of the company having established a quality control program for uranium analysis, it has been found that the ICP method of analysis being used to date is inappropriate for precise determination of uranium content. All previously analysed drill core samples are now being re-analysed using the DNC (delayed neutron counting) assay method.
The first batch of new assays includes core samples from the first five drill holes on the Richard Lake uranium deposit on the company's 9,950 hectare Kenora property in northwest Ontario. The new assays show grades increasing between 33 percent and 66 percent over the grades calculated from ICP analyses.
The following table shows calculated average grades over the mineralized intervals in diamond drill holes RL07-001 to RL07-005. Beneath each line of new assays in the table is a second line showing the average grade using the former ICP analyses. There is also a third line showing results "previously reported in error". These erroneous averages were calculated in a spreadsheet which included a one-line displacement of the analytical results, which only became apparent when the new DNC assays were imported into the same spreadsheet.
Table 1: Revised Richard Lake Assays
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RICHARD LAKE ASSAY SUMMARY - revised June 24th 2008
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DRILL Dist- Core
HOLE ance Len- Ura- U3O8 U3O8 per-
No. from hole From To gth nium per- lbs/ cent
adit dip (m) (m) (m) (ppm) cent ton change
--------------------------------------------------------------------------
-55
RL07- 55 m deg-
001 west rees 83.15 86 2.85 128 0.015 0.30 +33%
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using previous analyses 96 0.011 0.23
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previously reported
in error 82.40 86.00 3.60 87 0.010 0.20
--------------------------------------------------------------------------
-65
RL07- 55 m deg-
002 west rees 30.00 32.35 2.35 211 0.025 0.50 +52%
--------------------------------------------------------------------------
using previous analyses 139 0.016 0.33
--------------------------------------------------------------------------
previously reported
in error 29.20 31.00 1.80 138 0.016 0.33
--------------------------------------------------------------------------
-65
RL07- 33 m deg-
003 west rees 38.40 41.30 2.90 144 0.017 0.34 +66%
--------------------------------------------------------------------------
using previous analyses 87 0.010 0.21
--------------------------------------------------------------------------
previously reported
in error 38.00 38.40 0.40 167 0.020 0.39
--------------------------------------------------------------------------
and 53.50 54.00 0.50 264 0.031 0.62 +54%
--------------------------------------------------------------------------
using previous analyses 171 0.020 0.40
--------------------------------------------------------------------------
previously reported
in error 41.30 41.70 0.40 171 0.020 0.40
--------------------------------------------------------------------------
-55
RL07- 33 m deg-
004 west rees 53.00 59.35 6.35 130 0.015 0.31 +41%
--------------------------------------------------------------------------
using previous analyses 92 0.011 0.22
--------------------------------------------------------------------------
includes 53.00 54.00 1.00 501 0.059 1.18 +35%
--------------------------------------------------------------------------
using previous analyses 370 0.044 0.87
--------------------------------------------------------------------------
previously reported
in error 51.40 53.00 1.60 370 0.044 0.87
--------------------------------------------------------------------------
--------------------------------------------------------------------------
-65
RL07- 12 m deg-
005 west rees 41.00 59.00 18.00 324 0.038 0.76 +39%
--------------------------------------------------------------------------
using previous analyses 233 0.027 0.55
--------------------------------------------------------------------------
previously reported
in error 44.35 58.00 13.65 238 0.028 0.56
--------------------------------------------------------------------------
includes 46.20 48.00 1.80 1527 0.180 3.60 +38%
--------------------------------------------------------------------------
using previous analyses 1101 0.130 2.60
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previously reported
in error 44.35 48.00 3.65 459 0.054 1.08
--------------------------------------------------------------------------
and 51.30 53.00 1.70 326 0.038 0.77 +42%
--------------------------------------------------------------------------
--------------------------------------------------------------------------
using previous analyses 228 0.027 0.54
--------------------------------------------------------------------------
previously reported
in error 50.00 52.00 2.00 304 0.036 0.72
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and 55.65 59.00 3.35 381 0.045 0.90 +40%
--------------------------------------------------------------------------
using previous analyses 272 0.032 0.64
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previously reported
in error 55.00 58.00 3.00 312 0.037 0.74
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and 84.60 85.55 0.95 113 0.013 0.27 +51%
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using previous analyses 75 0.009 0.18
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also 90.70 91.75 1.05 445 0.053 1.05 +34%
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previously reported
in error 90.00 90.70 0.70 332 0.039 0.78
--------------------------------------------------------------------------
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