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Ur-Energy: Major Mineral Resource Expansion at Lost Creek

Ur-Energy Inc. (TSX:URE, NYSE MKT:URG) announce a new and increased mineral resource estimate for the Lost Creek Property.

The estimated mineral resource for the Lost Creek Property was last reported on April 30, 2012 with an update to the Preliminary Economic Assessment (“PEA”) of the Lost Creek Property. The current update of the resource base results from geologic data gathered primarily during the recent installation of Mine Unit 1 (MU1) production wells and also from relatively wide spaced delineation and exploration drilling at the LC East Project.  Since the April 2012 PEA, Ur-Energy has expanded the Lost Creek Property resources as follows: 

  • Measured resources increased by 16% (+0.65 million pounds) from 4.20 to 4.85 million pounds U3O8;
  • Indicated resources decreased by 8% (-0.35 million pounds) from 4.15 to 3.80 million pounds U3O8 due to re-categorizing of  resources within Mine Unit 1 and the planned second mine unit; and
  • Inferred resources increased by 65% (+1.87 million pounds) from 2.87 to 4.74 million pounds U3O8

Mr. John Cash, Vice President Regulatory Affairs, Exploration, and Geology, stated, We are pleased to be able to continue demonstrating the expandability of our flagship production property resource.  The close spaced drilling in Mine Unit 1 has resulted in a significant increase in the area’s resource base.  Those resources are now developed and available for extraction by in-situ recovery methods.  Furthermore, the wide spaced drilling at LC East has greatly increased the inferred resources and improved our understanding of the geologic systems on the Lost Creek Property.  This new knowledge will be applied as we advance the Project and Property with additional drilling in the future.”

The Lost Creek Property consists of six contiguous Project Areas totaling over 40,000 acres (see map).  Uranium production in MU1 of the Lost Creek Project started in August 2013.

 

 

A summary table providing details of the newly updated Lost Creek Property resource follows.

 

LOST CREEK PROPERTY RESOURCE SUMMARY

 

MEASURED

 

INDICATED

 

INFERRED

PROJECT

AVG GRADE

SHORT TONS

POUNDS

 

AVG GRADE

SHORT TONS

POUNDS

 

AVG GRADE

SHORT TONS

POUNDS

 

% eU3O8

(X 1000)

(X 1000)

 

% eU3O8

(X 1000)

(X 1000)

 

% eU3O8

(X 1000)

(X 1000)

LOST CREEK

0.058

3,116.9

3,589.9

 

0.052

2,350.1

2,443.9

 

0.057

1,836.4

2,085.3

LC EAST

0.054

1,175.3

1,260.3

 

0.040

1,689.3

1,360.8

 

0.046

1,665.8

1,533.0

LC NORTH

-----

-----

-----

 

-----

-----

-----

 

0.049

489.1

481.6

LC SOUTH

-----

-----

-----

 

-----

-----

-----

 

0.042

710.0

602.6

LC WEST

-----

-----

-----

 

-----

-----

-----

 

0.109

17.2

37.4

EN

-----

-----

-----

 

-----

-----

-----

 

-----

-----

-----

GRAND TOTAL

0.057

4,292.2

4,850.2

 

0.048

4,039.4

3,804.7

 

0.051

4,718.4

4,739.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MEASURED + INDICATED =

8,331.6

8,654.9

 

 

 

Notes:

1.     Sum of Measured and Indicated tons and pounds may not add to the reported total due to rounding.

2.     Mineral resources that are not mineral reserves do not have demonstrated economic viability.

3.     Based on grade cut-off of 0.02 percent eU3O8 and a grade x thickness cut-off of 0.3 GT.

4.     Typical ISR industry practice is to apply a GT cut-off in the range of 0.3 which has generally been determined to be an economic cut-off value.  This 0.3 GT cut-off was used in this evaluation without direct relation to an associated price.

5.     Measured, Indicated, and Inferred Mineral Resources as defined in Section 1.2 of NI 43-101 (the CIM Definition Standards). 

The increase in resource for MU1 is the result of a total of 1,036 holes drilled for the installation of production wells.  This new close spaced drilling revealed that mineralization is thicker, of higher grade and more extensive than previously estimated, resulting in an increase within the mine unit of 671,655 pounds in the Measured category.  As a result, the average grade for MU1 increased from approximately 0.055% to 0.066% eU3O8.  With that knowledge and experience, the resource estimation criteria were reviewed and revised slightly to provide resource estimates more consistent with the results seen in initial production drilling.   Using the revised criteria, the resources for all the Project areas were re-examined and revised where necessary.

A total of 180 exploration/delineation holes and 26 regional monitor wells were drilled and installed at the LC East Project in support of permitting.  The data obtained during this drilling are the basis for a 38,200 pound increase in measured and indicated resources and a 717,700 pound increase in the inferred category resources.  The Company has identified five areas containing resources on the LC East Project.  The general locations of the oxidation/reduction boundaries at LC East are known and there is potential for resource expansion through additional drilling both between the resource areas and within the resource areas.

Mr. Steve Cutler, a Geologist with Rough Stock Mining, P.Geo. and SME Registered Member, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical disclosure contained in this news release. Mr. Cutler has verified the sampling, analytical and test data underlying the Mineral Resource estimate disclosed in this news release.  A review by an independent party is necessary to comply with Canadian National Instrument 43-101 “Standards of Disclosure for Mineral Projects” which requires an independent review when the total mineral resource increases by more than 100% since the last independent review.  Since the March 2011 mineral resource estimate disclosure, Ur-Energy has recognized increased mineral resources at the Lost Creek Property as follows:

  • Measured and Indicated resources have increased by 65% (3.43 million pounds) from 5.22 to 8.65 million pounds U3O8; and
  • Inferred resources increased by 505% (3.96 million pounds) from 0.78 to 4.74 million pounds U3O8.

The April 30, 2012 Preliminary Economic Assessment of The Lost Creek Property is currently being updated to incorporate the increase in resources and new economic data.  Preliminary results are consistent with the sensitivities provided in the April 30, 2012 Assessment.  The resulting NI 43-101 compliant update will be filed in a Preliminary Economic Assessment on SEDAR within 45 days.

 

About Ur-Energy

Ur-Energy is a junior uranium mining company operating the Lost Creek in-situ recovery uranium facility in south-central Wyoming.  The Lost Creek processing facility has a two million pounds per year nameplate capacity with a one million pound annual rate planned from the mining areas at Lost Creek.  Ur-Energy engages in the identification, acquisition, exploration development, and operation of uranium projects in the United States and Canada.  Shares of Ur-Energy trade on the Toronto Stock Exchange under the symbol “URE” and on the NYSE MKT under the symbol “URG”. Ur-Energy’s corporate office is located in Littleton, Colorado; its registered office is in Ottawa, Ontario.

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