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investors | estimated ore reserves & resources
Hecla continued to have success with drilling at its operations by replacing 2012 production and adding to mineralized material and other resources. Hecla's silver reserves and resources increased for the 7th consecutive year. As of December 31, 2012, total proven and probable silver reserves increased to 150 million ounces, mineralized material increased to 22.4 million tons, and other resources increased to 23.4 million tons. In addition, gold mineralized material increased 75% to 13.5 million tons averaging 0.05 ounces of gold per ton.


(as of December 31, 2012)
 
Proven & Probable
Tons		 Silver
(oz/ton)		 Gold
(oz/ton)		 Zinc
(%)		 Lead
(%)		 Silver
(oz)		 Gold
(oz)		 Zinc
(tons)		 Lead
(tons)		  
 

Proven Reserves
    Lucky Friday, USA
    Greens Creek, USA
          Subtotal Proven
Probable Reserves
    Lucky Friday, USA
    Greens Creek, USA
          Subtotal Probable
         Total Proven & Probable Reserves


2,206,600
12,000

2,218,600

1,931,700
7,845,600

9,777,300
11,995,900


12.1
9.3



14.8
12.0


-
0.10



-
0.09


2.7
7.8



3.2
9.0


7.4
2.7



8.7

3.4


26,778,900
112,500

26,891,400

28,676,000
84,481,200
123,157,200
150,048,600


-
1,100
1,100

-
718,400
718,400
719,500


58,560
930
59,490

62,300
702,300
764,600
824,090


163,350
330
163,680

167,390
267,410
434,800
598,480

  
 
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 Sebastian, Mexico(3)
    San Juan Silver, USA(4)
    Star Complex, USA (5)
         Total Mineralized Material

19,028,600
448,600

1,297,300

515,500
1,061,200
22,351,200

5.7
5.9

3.4

14.8
3.0

-
0.12

0.06

-
-

2.3
7.0

1.5

1.1
7.5

3.8
3.2

1.1

2.1
6.4

108,704,400
2,650,500
4,371,000

7,619,600
3,235,200
126,580,700

-
53,500
73,900
-
-
127,400

440,470
31,580
19,080
5,820
80,100
577,050

731,460
14,300
14,640
10,760
68,340
839,500

  
 
Other Resources
Tons		 Silver
(oz/ton)		 Gold
(oz/ton)		 Zinc
(%)		 Lead
(%)		 Silver
(oz)		 Gold
(oz)		 Zinc
(tons)		 Lead
(tons)		  
       Lucky Friday, USA (6)
     Greens Creek, USA (7)
     San Sebastian, Mexico (8)
     San Juan Silver, USA (9)
     Star Complex, USA (10)
     Monte Cristo, USA (11)
         Total Other Resources

6,921,900
3,784,500
5,695,900
3,078,200
2,972,300

913,300
23,366,100

9.1
11.4
4.2
10.7
3.2

0.3

-
0.10
0.03
0.01
-

0.14

2.3
6.2
0.6
1.1
5.5

-

5.6
2.4
0.5
1.3
5.9

-

62,651,500
42,977,300
23,897,400
33,096,400
9,377,900

271,000
172,271,500

-
379,200
159,700
35,600
-
131,300
705,800

158,240
233,110
36,040
34,980
163,480
-
625,850

384,930
92,130
25,880
40,990
174,080
-
718,010

  

 

Totals may not match due to rounding for significant figures.

(1) Mineralized Material from Gold Hunter and Lucky Friday vein systems, diluted and factored for expected mining recovery.
(2) Mineralized Material only in Gallagher ore body, factored for dilution and mining recovery.
(3) Mineralized Material, diluted to minimum mining width of 2.0 meters for Hugh Zone, 1.5 meters for Andrea Vein.
(4) Mineralized Material, diluted to minimum mining width of 6.0 feet for Bulldog.
(5) Mineralized Material, diluted to minimum mining width of 4.3 feet.
(6) Other Resources from Gold Hunter and Lucky Friday vein systems, diluted and factored for expected mining recovery.
(7) Other Resources in East Ore, Gallagher, NWW, and 200S ore bodies, factored for dilution and mining recovery.
(8) Other Resources, diluted to minimum mining width of 2.0 meters for Hugh Zone, 1.5 meters for Andrea & Middle Veins.
(9) Other Resources, diluted to minimum mining width of 6.0 feet for Bulldog.
(10) Other Resources, diluted to minimum mining width of 4.3 feet.
(11) Other Resources, diluted to minimum mining width of 5 feet.

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

 

Cautionary Statements to Investors on Reserves and Resources

The United States Securities and Exchange Commission permits mining companies, in their filings with the SEC, to disclose only those mineral deposits that a company can economically and legally extract or produce. We use certain terms on this release, such as “resource,”“other resources,” and “mineralized materials” that the SEC guidelines strictly prohibit us from including in our filings with the SEC.  U.S. investors are urged to consider closely the disclosure in our Form 10-K, included on this website.