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Wealth is based on productivity, and productivity is expandable. In fact, productivity is fabulously expandable.
P.L. O'Rourke
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BRIGGS Project
BRIGGS
Country
USA
Province
California
Close to
Torna
Status
PRODUCTION
Surface
12 km² / 2,849 acres
Latitude / Longitude
35 N 56 / 117 W 11
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Risk and valuation analysis of the BRIGGS Project
Status Risk : Production
Country Risk : Very Low
Resource Risk : 49.00%
In situ value
1,487,341,712 $
Link to technical report
Title(s) of the BRIGGS Project
Atna Resources Ltd
Owner: 100%
Title
Company Profile
All Projects
Company website
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Atna Resource became the owner of the Briggs mine after its merger with Canyon Resources in November 2007.
Location of the BRIGGS Project
The Briggs gold deposit is located on the western flank of the Panamint Range, Inyo County, California, approximately 50 miles northeast of Ridgecrest.
History of the BRIGGS Project
No historical information was found on CR Briggs Mine (seven miles south of Ballarat) until the 1930s when the United States Government funded the first modern exploration program on the property. The property was explored by numerous companies from 1972 until it was placed into production by Canyon in 1996.
Geology of the BRIGGS Project
The Briggs gold deposit is hosted by Precambrian quartz and amphibolite gneisses that have been severely deformed by faults of Tertiary age.
Reserves and resources of the BRIGGS Project
Tonnage
Grade
Reserves and resources
Gold
Gold
g/t
oz
Proven
4,794,000
0.65
100 185
Probable
4,853,000
0.62
96 737
Proven and Probable
9,647,000
0.63
196 922
Measured
10,326,000
0.72
239 032
Indicated
20,331,000
0.59
385 658
Mesured and Indicated
30,657,000
0.63
624 689
Inferred
15,183,000
0.53
258 717
Total
55 487 000
1 080 328
Definitions
Reserves and resources of the BRIGGS Project
Metal
Total
Reserves
Resources
Unit
In situ value
Proven
Probable
Proven and Probable
Measured
Indicated
Mesured and Indicated
Inferred
Gold
1 080 328
100 185
96 737
196 922
239 032
385 658
624 689
258 717
oz
1 468 814 085 US$
Production history
Metal
2010
2009
GOLD (oz)
25,100
11,198
Production Objectives
Metal
2013
2014
2015
2016
2017
2018
2019
GOLD (oz)
40,000
40,000
40,000
40,000
40,000
40,000
40,000
Reserves and Resources
3/3/2011
(Atna Resources)
Reports Updated Gold Reserves at Briggs and Reward Mines
Exploration and drilling
10/13/2011
(Atna Resources)
Completes Briggs Drilling with Strong Gold Intercepts
9/13/2011
(Atna Resources)
North Main Zone Expanding at Atna's Briggs Mine
3/1/2011
(Atna Resources)
Reports Initial Drill Results at Briggs Mine
1/30/2011
(Atna Resources)
Commences Briggs Mine Exploration
1/25/2011
(Atna Resources)
Reports Increased Gold Production and Lower Costs at Briggs ...
10/8/2010
(Atna Resources)
Reports Strong Production at Briggs Mine
2/26/2010
(Atna Resources)
Reaches Commercial Production Levels at the Briggs Mine
5/13/2009
(Atna Resources)
Makes First Gold Pour at Briggs Mine
2/27/2009
(Atna Resources)
Confirms New Gold Zone at Briggs Mine
1/30/2009
(Atna Resources)
Commences Mining Gold Ore at Briggs
12/5/2007
(Canyon Res.)
Drilling At Its Briggs Area Projects
Discoveries and Drilling Results
1/19/2012
(Atna Resources)
Increases Briggs Gold Resource and Replaces Mined Ounces
5/25/2011
(Atna Resources)
Drills 100 feet (30.5 m) grading 0.058 oz/ton gold (1.97 g/t...
5/2/2011
(Atna Resources)
Expands New Reserve Area
4/7/2011
(Atna Resources)
Announces Expansion of Deep Briggs Zone
3/23/2011
(Atna Resources)
Reports Additional Positive Drill Results at Briggs Mine
2/23/2010
(Atna Resources)
Updates Reserve Estimates for Briggs and Reward
8/12/2009
(Atna Resources)
Increases Gold Resources at Briggs Mine
6/8/2009
(Atna Resources)
Expands Mineralization at Briggs Mine
2/20/2009
(Atna Resources)
Reports Reserve Increase and Updated Mine Plan for the Brigg...
4/16/2008
(Atna Resources)
Drilling Extends Gold Mineralization At Briggs Mine
2/28/2008
(Canyon Res.)
Reports Positive Cecil R Drilling
2/6/2008
(Canyon Res.)
Updates Underground Mine Design Study For Its Briggs Mine
Location
Data last updated on : 3/5/2011
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