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investors | estimated ore reserves & resources
Hecla continued to have success with drilling at its operations by replacing 2011 production and adding to reserves with substantial gains in resources. As of December 31, 2011, total silver reserve and resource ounces for Hecla increased to 148 million ounces and 281 million ounces, respectively. Both are the largest in Hecla's history.


(as of December 31, 2011)
 
Proven & Probable
Tons		 Silver
(oz/ton)		 Gold
(oz/ton)		 Zinc
(%)		 Lead
(%)		 Silver
(oz)		 Gold
(oz)		 Zinc
(tons)		 Lead
(tons)		  
  Proven Reserves
    Lucky Friday, USA

Probable Reserves
    Lucky Friday, USA
    Greens Creek, USA

         Total Proven & Probable Reserves


2,345,500


1,345,300
7,991,000
12.6


14.7
12.3
-


-
0.093
3.0


3.2
9.2


7.8


9.3

3.5
29,573,900
29,573,900

19,746,200
98,383,300
118,129,500
147,703,400


-
-

-
742,400
742,400
742,400


70,160
70,160

42,890
733,140
776,030
846,190


183,100
183,100

124,720
281,620
406,340
589,440

  
 
Mineralized Material
Tons		 Silver
(oz/ton)		 Gold
(oz/ton)		 Zinc
(%)		 Lead
(%)		 Silver
(oz)		 Gold
(oz)		 Zinc
(tons)		 Lead
(tons)		  
      Lucky Friday, USA (1)
    Greens Creek, USA (2)
    San Juan Silver - Creede, USA(3)
    Star Complex, USA (4)
         Total Mineralized Material

18,857,800
445,900

515,500

986,200

6.3
5.8

14.8

3.2

-
0.109

-

-

2.0
7.0

1.1

7.7

4.2
3.0

2.1

6.8

118,773,700
2,582,400
7,619,600

3,146,400

132,122,100

-
48,500
-
-
48,500

369,960
31,170
5,820
75,620
482,570

783,650
13,430
10,760
66,730
874,570

  
 
Other Resources
Tons		 Silver
(oz/ton)		 Gold
(oz/ton)		 Zinc
(%)		 Lead
(%)		 Silver
(oz)		 Gold
(oz)		 Zinc
(tons)		 Lead
(tons)		  
       Lucky Friday, USA (5)
     Greens Creek, USA (6)
     San Sebastian, Hugh, Mexico (7)
     San Sebastian Andrea, Mexico (8)
     San Juan Silver - Creede, USA (9)
     Star Complex, USA (10)
         Total Other Resources

4,396,900
4,416,700
1,142,500
2,151,300
2,577,300

2,379,100

9.7
11.9
8.0
3.1
11.4

3.5

-
0.093
0.010
0.057
-

-

2.0
5.7
4.4
-
1.4

6.0

6.4
2.3
2.9
-
1.6

5.9

42,531,600
52,581,500
9,186,200
6,654,000
29,446,100

8,213,800
148,613,200

-
412,700
14,300
122,200
-
-
549,100

87,300
253,380
49,930
-
34,980
142,650
568,940

279,770
101,570
33,020
-
40,990
139,590
594,940

  

Totals may not match due to rounding for significant figures.

(1) Measured and Indicated resources from Gold Hunter and Lucky Friday vein systems, diluted and factored for expected mining recovery.
(2) Indicated resources, Gallagher orebody, factored for dilution and mining recovery.
(3) Indicated resources diluted and factored to minimum mining width mechanized 6.0 feet -A vein only - 100% Hecla.
(4) Indicated resources diluted and factored for minimum mining width for concventional mining.
(5) Inferred resources from Gold Hunter and Lucky Friday vein systems, diluted and factored for expected mining recovery.
(6) Inferred resources, East, West, SW, Gallagher, NWW, 9A, and 200S orebodies, factored for dilution and mining recovery.
(7) Inferred resources, Hugh zone (Deep Francine), diluted and factored to minimum mining width (also contains 23,540 tons of copper).
(8) Inferred resources diluted and factored to minimum mining width - 2 meter.
(9) Inferred resources diluted and factored to minimum mining width. San Juan Silver JV (Creede, CO) - 100% Hecla in 2011.
(10) Inferred resources diluted and factored to minimum mining width for conventional mining.

For a three year comparison per property, please click below.

Greens Creek, USA
Lucky Friday, USA
Star Complex, USA
San Juan Silver, USA
San Sebastian, Mexico