Rock CreekNoxon, Montanapre-development project

Monte CristoEsmeralda County, Nevada

exploration project

FayolleVal d’Or, Quebecexploration project

San Juan SilverCreede, Colorado

exploration project

San SebastianDurango, Mexicooperating mine

Opinaca / WildcatJames Bay, Quebecexploration project

Heva–HoscoVal d’Or, Quebecexploration project

Silver ValleyWallace, Idaho

exploration project

Greens CreekAdmiralty Island, Alaskaoperating mine

Corporate O�ceVancouver, BC

Corporate O�ce (HQ)Coeur d’Alene, Idaho Lucky Friday

Mullan, Idahooperating mine

Casa BerardiVal d’Or, Quebecoperating mine

Quebec O�ceVal d’Or, Quebec

MontanoreLibby, Montanapre-development project

Hecla Mining Company is not only the largest and one of the lowest-cost U.S. silver producers, and the third largest U.S. producer of both zinc and lead, but also a growing gold producer.

Hecla owns and operates four mines on district-sized land packages in mining-friendly North American jurisdictions: Greens Creek in Alaska, one of the largest and highest-margin primary silver mines in the world; the newly revitalized Lucky Friday silver mine in North Idaho; the San Sebastian silver-gold mine near Durango, Mexico; and the Casa Berardi gold mine in Quebec. In addition to its diversified silver and gold operating and cash-flow generating base, Hecla has a number of exploration properties and pre-development projects in six world-class silver and gold mining districts in the U.S., Canada, and Mexico.

2015 record silver production was 11.6 million ounces with 189,327 ounces of gold production. Both exceeding the Company’s expectations for 2015. 2016 company-wide production is estimated to be 15.75 million ounces of silver and 233,000 ounces of gold.

Greens Creek – Admiralty Island, Alaska ■ One of the world’s largest and lowest-cost

primary silver mines. ■ Produced approx. 200M oz. of silver and

1.5M oz. of gold since startup in 1989. ■ 2.1M oz. of silver production and 11,528 oz. of

gold production in Q2/16; 2016E silver production of 8.3M oz. and 53,000 oz. of gold.

Lucky Friday – Mullan, Idaho ■ 857,542 oz. of silver production in Q2/16;

2016E silver production of 3.1M oz. ■ #4 Shaft has been excavated to its final dept of

8,600 feet and is expected to be operational in the fourth quarter of 2016.

Casa Berardi – Val d’Or, Quebec ■ 41,954 oz. of gold production in Q2/16; 2016E

gold production of 145,000 oz. ■ East Mine Crown Pillar (EMCP) pit excavation

has exposed vein closer to surface than expected. EMCP 2016E gold production of 5,000 oz. increasing to ~30,000 oz. in 2017.

San Sebastian – Durango, Mexico ■ 1.3M oz. of silver production and 9,483 oz. of

gold production in Q2/16; 2016E silver production of 4.35M oz. and 35,000 oz. of gold.

San Sebastian – Hecla’s Newest Mine – San Sebastian is a very high-grade silver and gold mine in Mexico. Production began late in 2015 and the first doré was poured on December 22, 2015. A series of shallow open pits are being mined over an expected 18 to 24 months, generating strong cash flow for the Company. The mine has required very little capital to begin production, due to renting a third-party mill to process the ore, utilizing contract miners to mine it, and the shallow nature of the pits.

September 2016 Investor Fact Sheet www.hecla-mining.com

Multiple Secure Revenue Streams

Low Political Risk Jurisdictions

Established Work Force

Commitment to Safety

Four High-Quality Operations

Strong Cash Flow Flexibility

Healthy Cash Margins

Strong Financial Position

Strong Investment

Fundamentals

Share Performance NYSE: HLend of Q2: 06/30/16, (1) as of 09/02/16 Share Price: $ 5.91(1)

52-Week Range: $ 1.45 – $7.26(1)

Basic Shares: 381.5 millionFully Diluted: 388.9 millionMarket Capitalization: $ 2.3B (1)

Operating Mines

Key Growth Initiatives

Rock Creek and Montanore – Rock Creek (acquired in 2015) and Montanore (acquired in September 2016) are two large silver/copper deposits in Montana. Rock Creek expects an SEIS by the end of 2016. Montanore has an EIS and Record of Decision. The projects are being permitted separately and both have the potential to be large, long-lived silver/copper mines.

Lucky Friday #4 Shaft – The #4 Shaft, a key growth project, has reached its final depth of 8,600 feet below the surface. The focus now turns to equipping the shaft with steel sets, guides, skip loading facilities and electrical infrastructure, with the goal of the shaft being fully operational in the fourth quarter of 2016, and then beginning the lateral development necessary to provide access to higher-grade material that should extend the mine life more than 20 years.

Reconciliation of Cost of Sales and Other Direct Production Costs and Depreciation, Depletion and Amortization, the most comparable GAAP measurement, to Cash Cost, After By-Product Credits, per Silver Ounce for Greens Creek, Lucky Friday & San Sebastian (dollars and ounces in thousands, except per ounce – unaudited)

Q2/2016 Q1/2016 Q4/2015 Q3/2015 Q2/2015 Costs of sales and other direct production costs and depreciation, depletion and amortization (GAAP) $ 71,667 $ 71,036 $ 54,441 $ 70,043 $ 57,965 Depreciation, depletion and amortization (16,300) 17,374 18,083 16,669 16,451 Treatment costs 20,527 (20,963) (22,495) (18,518) (19,305) Change in product inventory 2,122 (1,959) (3,412) 5,445 (6,119) Reclamation and other costs (1,369) 605 397 624 96 Cash cost, before by-product credits (1) 76,647 75,979 71,868 65,823 67,034 By-products credits (60,577) (61,330) (51,683) (46,401) (53,183) Cash cost, after by-product credits $ 16,070 $ 14,649 $ 20,185 $ 19,422 $ 13,851 Divided by silver ounces produced 4,233 4,635 3,626 2,584 2,469 Cash cost, before by-product credits, per silver ounce $ 18.11 $ 16.39 $ 19.79 $ 25.47 $ 27.15 By-product credits per silver ounce $ (14.31) $ (13.23) $ (14.24) $ (17.96) $ (21.54) Cash cost, after by-product credits, per silver ounce $ 3.80 $ 3.16 $ 5.55 $ 7.52 $ 5.61 (1) Includes all direct and indirect operating cash costs related to the physical activities of producing metals, including mining, processing and other plant costs, third-party refining and marketing expense, on-site general and administrative costs, royalties and mining production taxes, net of by-product revenues earned from all metals other than the primary metal produced at each unit.

Financial Highlights(dollars in thousands, except per share amounts) Q2/2016 Q1/2016 2015 2014 2013 2012 Sales of products $ 171,302 $ 131,017 $ 443,567 $ 500,781 $ 382,589 $ 321,143 Net income (loss) 24,116 (618) (86,968) 17,824 (25,130) 14,954 Cash provided by operating activities 67,390 18,748 106,445 83,124 26,644 69,016Cash, cash equivalents and short-term investments at end of reporting period 158,683 134,018 155,209 209,665 212,175 190,984Dividend per Common Share 0.0025 0.0025 0.01 0.01 0.02 0.06

(research as of 06/30/16)Van Eck Associates Corporation The Vanguard Group, Inc. BlackRock Institutional Trust Company, N.A. Dimensional Fund Advisors, LP State Street Global Advisors (US)Ceredex Value Advisors (US)Voya Investment Management LLCGlobal X ManagementNorthern Trust Investments, Inc.Geode Capital Management

(1) Cash cost, after by-product credits, per silver ounce represents non-U.S. Generally Accepted Accounting Principles (GAAP) measurement; a reconciliation of which to cost of sales and other direct production costs and depreciation, depletion and amortization (GAAP) can be found below. (2) Realized prices are calculated by dividing gross revenues for each metal by the payable quantities of each metal included in the concentrate and doré sold during the period.

Leading Silver Producer with Strong Cash Margins (Greens Creek, Lucky Friday and San Sebastian)

Qualified Person (QP) Pursuant to Canadian National Instrument 43-101 Dean McDonald, P.Geo., Senior Vice President – Exploration of Hecla Mining Company, who serves as a Qualified Person under National Instrument 43-101(“NI 43-101”), supervised the preparation of the scientific and technical information concerning Hecla’s mineral projects in this fact sheet. Information regarding data verification, surveys and investigations, quality assurance program and quality control measures and a summary of analytical or testing procedures for the Greens Creek Mine are contained in a technical report prepared for Hecla and Aurizon Mines Ltd. (“Aurizon”) titled “Technical Report for the Greens Creek Mine” effective date March 28, 2013, and for the Lucky Friday Mine are contained in a technical report prepared for Hecla and Aurizon titled “Technical Report for the Lucky Friday Mine Shoshone County, Idaho, USA” effective date April 2, 2014, and for the Casa Berardi Mine are contained in a technical report prepared for Aurizon titled “Technical Report on the mineral resource and mineral reserve estimate for Casa Berardi Mine, Northwestern Quebec, Canada” effective date March 31, 2014 (the “Casa Berardi Technical Report”), and for the San Sebastian Mine are contained in a technical report titled “Technical Report for the San Sebastian Ag-Au Property, Durango, Mexico” effective date September 8, 2015. Also included in these four technical reports is a description of the key assumptions, parameters and methods used to estimate mineral reserves and resources and a general discussion of the extent to which the estimates may be affected by any known environmental, permitting, legal, title, taxation, socio-political, marketing or other relevant factors. Copies of these technical reports are available under Hecla’s and Aurizon’s profiles on SEDAR at www.sedar.com. The Casa Berardi Technical Report was reviewed by Dr. McDonald on behalf of Hecla. To the best of Hecla’s knowledge, information and belief, there is no new material scientific or technical information that would make the disclosure of the mineral resources and mineral reserves for Casa Berardi in this fact sheet inaccurate or misleading.

Cautionary Statements Statements made which are not historical facts, such as strategies, plans, production, exploration results and plans, costs, and prices or sales performance are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and “forward looking information” under Canadian securities laws. Words such as “may,” “will,” “should,” “expects,” “intends,” “projects,” “believes,” “estimates,” “targets,” “anticipates,” and similar expressions are used to identify these forward-looking statements. Forward-looking statements involve a number of risks and uncertainties that could cause actual results to differ materially from those projected, anticipated, expected or implied. These risks and uncertainties include, but are not limited to, metals price volatility, volatility of metals production and costs, environmental and litigation risks, operating risks, project development risks, political risks, labor issues, ability to raise financing, and exploration risks. Refer to our Form 10-K and 10-Q reports for a more detailed discussion of risk factors that may impact expected future results. We undertake no obligation to update forward-looking statements other than as may be required by law.

DirectorsTed Crumley, ChairmanPhillips S. Baker, Jr.George R. JohnsonGeorge R. Nethercutt, Jr.Stephen F. RalbovskyTerry V. RogersCharles B. StanleyDr. Anthony P. Taylor

OfficersPhillips S. Baker, Jr., President & CEOLindsay Hall, Sr. VP - Chief Financial OfficerLarry Radford, Sr. VP – OperationsDean W. McDonald, Sr. VP – ExplorationDavid C. Sienko, VP – General CounselRob Brown, VP – Corporate Development

U.S. Corporate Office 6500 North Mineral Drive, Suite 200Coeur d’Alene, Idaho 83815-9408208.769.4100

Canadian Corporate Office Suite 970, 800 West Pender StreetVancouver, BC, Canada V6C 2V6604.682.6201

Investor Inquiries 800.432.5291 | hmc-info@hecla-mining.com

Largest Institutional Owners Company Info

Analyst Coverage

Michael Jalonen, BofA Merrill LynchMatthew Fields, BofA Merrill Lynch (High Yield) Jessica Fung, BMO Capital MarketsCosmos Chiu, CIBC World MarketsJorge Beristain, Deutsche BankLucas Pipes, FBR & Co.John Bridges, JP MorganDan Rollins, RBC Capital MarketsHeiko Ihle, Rodman & RenshawCraig Johnston, Scotia Capital, Inc.David Deterding, Wells Fargo Securities (High Yield)