Macusani Yellowcake Inc.
TSX VENTURE : YEL

Macusani Yellowcake Inc.

December 14, 2007 08:00 ET

Macusani Yellowcake Intersects 12.02 Metres Grading 8.67 Lbs U3O8/Tonne (0.3934% U3O8) in Additional Discovery at Colibri II Property at Macusani, Peru

TORONTO, ONTARIO--(Marketwire - Dec. 14, 2007) - Macusani Yellowcake Inc. ("Macusani") (TSX VENTURE:YEL) is pleased to announce assay results from the ongoing drilling program at its Colibri II uranium property on the Macusani Plateau in southeastern Peru. These holes were drilled from the two drill collars which have been designated as Platform 2 ("P02") and Platform 1 ("P01"). At each Platform, typically one hole is drilled vertically and the other four holes are drilled with azimuths in approximately the four compass directions (north, south, east and west) at dips of approximately minus 45 degree angles. The drill hole lengths ranged from 49.01 m to 72.62 m from surface.

As with the previous intercepts (see previous press release dated November 12, 2007) each hole intersected multiple horizontally-oriented uraniferous zones at depths starting at surface down to approximately 15.00 m to as deep as 60.00 m. The uranium minerals are hosted in acidic volcanic rocks of rhyolite composition that cover larger areas of the Macusani Plateau in "blanket like" formations from surface to a depth of about 100 m.

The assay results from six of these holes are shown in the table below. (Note: The interval lengths are measured along the core length and may not represent true widths.)



Depth
From To Interval U3O8 U3O8
Borehole (m) (m) (m) (%) (lb/t)

DD1 Vertical-P01 (53.97m)
0.00 12.02 12.02 0.3934 8.6729
21.32 22.64 1.32 0.0114 0.2522
29.63 31.34 1.71 0.0099 0.2184

DD4 West-P02 (49.01m)
0.00 14.87 14.87 0.0272 0.6006
17.39 19.96 2.57 0.0447 0.9853
22.60 28.75 6.15 0.0212 0.4680
38.86 41.45 2.59 0.0721 1.5885
44.93 49.01 4.08 0.0340 0.7487

DD2 North-P01 (65.20m)
0.00 3.17 3.17 0.0078 0.1716
5.17 5.45 0.28 0.0337 0.7435
8.43 9.97 1.54 0.0360 0.7929
25.50 25.90 0.40 0.0468 1.0321
35.76 36.72 0.96 0.0219 0.4836
51.68 52.70 1.02 0.0136 0.2990
56.58 56.95 0.37 0.0245 0.5408
62.98 65.20 2.22 0.0060 0.1326

DD3 East-P01 (52.41m)
0.00 13.10 13.10 0.0328 0.7227
18.43 19.72 1.29 0.0085 0.1872
24.91 25.40 0.49 0.0104 0.2288
37.00 37.27 0.27 0.0132 0.2912
49.28 52.41 3.13 0.0136 0.2990

DD4 South West-P01 (72.62m)
0.00 16.20 16.20 0.0246 0.5434
23.16 30.06 6.90 0.0514 1.1335
39.42 39.82 0.40 0.0630 1.3883
41.67 42.37 0.70 0.0133 0.2938
57.10 58.97 1.87 0.0219 0.4836

DD5 West-P01 (58.30m)
0.00 19.84 19.84 0.0325 0.7175
29.34 29.60 0.26 0.0404 0.8917
31.50 32.39 0.89 0.0091 0.2002
35.00 35.68 0.68 0.0068 0.1508
46.99 47.75 0.76 0.0750 1.6535


Peter Hooper, President of Macusani stated: "these results are very encouraging and are confirming our model of a very large horizontal bedded structure containing substantial amounts of Uranium. Every hole has continuous uranium mineralization from surface to the end of each hole. Our deepest hole is 72 metres in depth. Our drill programme will be accelerated; we are adding a second drill in January and will augment that with two more contract machines later. Our current 20,000 metre programme of 300 sixty-five metre holes is to test our initial 4 kilometre very highly radiometric anomaly."

The drill plan showing drill platform locations and coordinates is shown on page 10 of our corporate power point that is on the Macusani web site.

Quality Control

The Company employs a QA/QC protocol on all aspects of its analytical procedures. Whole core samples are sent to SGS Laboratories Peru in Lima, Peru. Samples are taken in intervals depending on the geological boundaries and type of mineralization (veins, veinlets, stockwork, dissemination, non-mineralised) but usually not more than 1m sample. At SGS in Lima the core samples are crushed, pulverised, homogenised and a 250g riffled representative sample analysed for Uranium using ICP-MS techniques on a suite of 50 chemical elements.

Two blank sample and two standards covering a range of grades are inserted every 50th sample. The pulps are stored at present at SGS in Lima.

All aspects of the exploration program, including the Quality Control program, were supervised by Dr. Laurence Stefan, Ph.D. (Economic Geology), Director of Macusani, who is responsible for all of the scientific and technical information in this news release. Mr. Ian Foreman, P.Geo., a Qualified Person as defined under National Instrument 43-101, has reviewed the technical information used in the preparation for this release.

About Macusani Yellowcake Inc.

Macusani controls over 20,000 hectares (2,000 km2) of mineral properties in Peru - Macusani, Munani, Lagunillas and Rio Blanco - all regions in Puno in southeastern Peru. A 6,500 m diamond drilling program is underway on the Macusani Plateau along a 4 km long radiometric anomaly. Macusani believes that its properties are underlain by uraniferous volcanic ignimbrite breccia rocks similar to those currently being drilled on nearby properties.

There are 24,296,285 common shares of Macusani Yellowcake Inc. outstanding (32,876,260 common shares, fully diluted).

For more information, please visit the website at www.macusaniyellowcake.com.

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

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