Dianor Resources Inc.
TSX VENTURE : DOR

Dianor Resources Inc.

September 13, 2005 16:13 ET

Dianor Resources Inc.: DMS Test Results Received for Leadbetter Property

VAL-D'OR, CANADA--(CCNMatthews - Sept. 13, 2005) - Dianor Resources Inc. (TSX VENTURE:DOR) is pleased to announce that it has received the results of initial DMS ("Dense Media Separation") tests on three (3) samples from bedrock pits excavated on the Leadbetter property north of Wawa, Ontario. The results demonstrate that diamonds having commercial characteristics (greater than 0.85mm and having gem qualities) occur in the diamond-bearing rock (DBR) unit, a metamorphosed heterolithic clastic rock on the Leadbetter property and that the diamonds can be recovered using conventional technologies. Furthermore, concentrates produced from the DMS circuit do not contain large amounts of heavy minerals, a positive contrast when compared to typical Wawa volcaniclastic formations. The diamond bearing rock (DBR) on the Leadbetter property is considered not to be related to the Wawa volcaniclastic formations.

SGS Lakefield Research Limited conducted the test work. The samples, totaling 2,711.9 kilograms, were collected from pits number 1, 4 and 8 (701.5, 1097.4 and 913.0 kg respectively). A total of 63 diamonds having commercial characteristics (greater than 0.85 mm and having gem qualities) were recovered. In conjunction with the DMS tests, attrition milling whereby rock is ground in a rotating drum (attrition mill) to produce a finer sized material (rock flour) which is then concentrated to produce a heavy mineral concentrate containing heavy minerals (density greater than3) including diamonds and indicator minerals, was conducted on a portion (10% by weight) of each sample.



Diamond Counts - DMS test
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PIT 1 PIT 4 PIT 8
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Diamond Number of Carats Number of Carats Number of Carats
Size Fractions Stones Stones Stones
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- 3.35 / + 2.36 mm 2 0.265 0 0.000 0 0.000
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- 2.36 / + 1.70 mm 1 0.053 1 0.140 2 0.203
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- 1.70 / + 1.18 mm 10 0.341 2 0.057 6 0.204
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- 1.18 / + 0.85 mm 13 0.172 12 0.139 14 0.130
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-850 / + 600 micronsm 18 0.094 15 0.096 21 0.113
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-600 / + 425 micronsm 24 0.045 15 0.025 27 0.047
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-425 / + 300 micronsm 52 0.027 42 0.023 39 0.022
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-300 / + 212 micronsm 60 0.011 47 0.008 23 0.005
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-212 / + 150 micronsm 118 0.007 113 0.007 47 0.003
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-150 / + 105 micronsm 127 0.004 503 0.011 131 0.003
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TOTALS: 425 1.02 750 0.50 310 0.73
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SGS reports that the grade for diamonds greater than 0.85 mm from Pit #1 is 1.19 c/t; from Pit #4 is 0.31c/t and from Pit #8 is 0.59 c/t (carats per tonne). A full audit of the test work and diamond recovery was only undertaken on the sample from Pit#1, with the result that two additional diamonds (greater than 1.18 mm) were recovered. The audit of Pit#1 consisted of screening and re-crushing of the DMS tailings to minus 3mm and passing through the DMS plant a second time. The second pass tailings were dried, screened and subject to magnetic separation, grease tabling and x-ray sorting to recover any remaining diamonds. A total of 78 diamonds (76 diamonds were less than 0.85mm and two were greater than 1.18mm) were recovered during the auditing. Samples from Pit #4 and Pit #8 were not audited and therefore all available diamonds may not have been recovered.

SGS Lakefield states in their report: that it is their opinion that the grades of the samples are better than grades reported from other diamond properties in the Wawa area and particularly when compared to the diamond grades reported for samples from Wawa volcaniclastic formations.

The results of attrition milling of the three (3) representative samples of the diamond-bearing bedrock (DBR) recovered diamond indicator minerals (chromites, garnets, picro-ilmenites and olivines). The chemistry of these minerals is consistent with those observed in material recovered by CFM Minerals and previously reported on (press release August 22, 2005).

These DMS test results are the final results from the processing of approximately 4.86 tonnes of DBR rock from the Leadbetter property. The testing indicates that conventional diamond industry equipment and procedures can be used to recover diamonds from the DBR unit and can be utilized in any future bulk sampling programs on the property. Dianor is currently planning its Fall and Winter programs for the Leadbetter Diamond Project. Currently, 3 diamond drills are operating on the property, completing the phase 1 drilling program of 5,000 metres.

The sampling was conducted under the supervision of Dr. Winfried Brack, P. Geo. and all sampling, storage, transportation and processing of samples at SGS Lakefield was conducted as per National Instrument 43-101 standards. Dr. Brack and Mr. Carl G. Verley, P.Geo are the qualified persons responsible for the technical information contained in this news release.

Dianor is an innovative exploration company focused on diamond exploration. The Company has entered into option/joint ventures in Quebec and Ontario with other exploration companies to explore for diamonds.

Dianor's common shares are listed on the TSX Venture Exchange under the symbol "DOR".

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this press release.

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