Hecla Mining Company · NYSE:HL
Hecla Mining — Corporate Update (August 2018)
19 slides from Hecla Mining's corporate update, Aug 7, 2018
Slide 1: To accompany 08/07/18 news release
To accompany 08/07/18 new release
Slide 2: Cautionary Statements
Cautionary Statements rectal NYSE ‘Cautionary Statement Regan Fonard Loking Steers, Ths pesertatin cortans Towardcokngstternis wii he tearing cl Secon 2A dl he Secures A of 583, as amended en Secon 2 othe Sucre changed of 1884, a amended whch ae itandodtobe coverodty the se tatorcreedty such sects a
Slide 3: Casa Berardi - Mine Site Mineralization Trends
Casa Berardi - Mine Site Mineralization Trends High-grade mineralized trends defined from surface and underground drilling — = CASA BERARDI! MINE Surface Infrastructures i cipal Area ey Definition Q218 Wiest Mine & 113 Ares 2a Fa
Slide 4: Casa Berardi - Expansion of Mineralized Trends
Casa Berardi - Expansion of Mineralized trends rectal High-grade mineralized trends extended with surface and underground drilling vs: CASA BERARDI MINE Surface Infrastructures i "Principal Area West Mine ‘[; A a ep a W) J surtace Exploration a2is | il © (223 zone Vetironion at Wat Mie 813 Area 118
Slide 5: Casa Berardi - Underground Drilling
Casa Berardi - Underground Drilling High-grade at depth and along strike; high-grade from surface on 123 Zone NYSE:HL ED 20 Mode! ING . 134 Zone Principal Area \ Drill Hole [True Width} Gold TP Tons AO rea number [fee | oxen) pattie [roe wise] cols Ss a ‘Number | (Feet) | (oxfton) ee ee lasso sa ae
Slide 6: Casa Berardi - Surface Drilling
Casa Berardi - Surface Drilling Infill and exploration drilling of west extension of EMCP Pit; deeper 160 Pit P20 Model 1000 — feet Proposed EMCP Pit Surface EMCP Pit Drill Hole |True Width} Gold Number (Feet) | (0z/ton} cer-148-062 [97.2 0.04 ceF-248-066 | _40.3 0.11 car-aas-067 |__9.9 0.13 ‘cer-14
Slide 7: Casa Berardi - Open Pits Along Deformation Zone
Casa Berardi - Open Pits Along Deformation Zone esta Lac Germain deposit identified 4.5 miles from mining lease vsti [es CASA BERARDI MINE & LAC GERMAIN DEPOSIT Surface Infrastructures Projection of Casa Berardi Deformation Zone i i i i r
Slide 8: Gold-Bearing Lenses of Lac Germain Deposit
Gold-Bearing Lenses of Lac Germain Deposit bscial Multiple lenses extend from surface to depth ses Ss —, Wacke and N \F Iron Formation 14.82 /2.0 n 23100 E || Looking N257° y
Slide 9: Lac Germain - Longitudinals of Key Lenses
Lac Germain —- Longitudinals of Key Lenses High-grade, near-surface; steep-plunging, high-grade shoot to depth LG-2 Zone © 2018 DDH * Historical DDH 500 feet Looking North © Greywacke © 2018 DDH * Historical DDH 500 feet
Slide 10: San Sebastian - Strong Exploration Potential
San Sebastian - Strong Exploration Potential Hectal Continued strong results near mine infrastructure v North Vein Exploration West Francine RC Drilling |S Middle vein East Francine Polymetallic Vein Exploration | Exploration Drilling Drilling TT S, S, Polymer Infill Drilling YS. ., LEGEND © 218 Dri
Slide 11: Francine Vein - Polymetallic and Oxide Potential
Francine Vein - Polymetallic and Oxide Potential Polymetallic traced over 8,000 feet of strike length; Oxide dropped east of fault ws: ‘SAN SEBASTIAN WINE AREA] 10.2 oziton silver 2.1% Cu, 2.6% Pb, 2.7% Zn over 10.0 feet (Looking NE) \ FRANCINE VEIN LONGITUDINAL SECTION EAST FRANCINE, VEIN OXIDE FRA
Slide 12: Francine Vein Defined to the West
Francine Vein Defined to the West New, near-surface mineralization identified with reverse circulation drilling [ = (Looking NE) WEST FRANCINE VEIN OXIDE MINERALIZATION ee FRANCINE VEIN LONGITUDINAL SECTION FRANCINE VEIN POLYMETALLIC MINERALIZATION | | over 5.0 feet (RC) © PROPOSED DRILL HOLE DRILL
Slide 13: Oxide Opportunities Along the Professor Vein
Oxide Opportunities Along the Professor Vein High-grade oxide areas within 500 feet of Francine Vein mine infrastructure | [sanseonsTan une aRcay > | 6,000 6,500 5,500 31.0 oziton silver 115.2 oziton silver over 6.3 feet over 2.8 feet (Looking NE) PAST PITS 278.0 oziton silver over 1.2 feet 1.03 ozi
Slide 14: Greens Creek - Adding to the Known Trends
Greens Creek - Adding to the Known Trends bscial Drilling expected to continue to convert resources into reserves SEH Plan View- Second Quarter Drilling \ Upper Plate Definition & x Exploration Lower Southwest Definition & Exploration D200South J Exploration Gallagher Exploration y, Trends of Minera
Slide 15: Fire Creek - Underground Definition Drilling
Fire Creek - Underground Definition Dri Upgrading inferred resources and extending productive veins Spiral 2 (Infill) Updip and to north of the Joyce Splay = 1.08 0z/ton gold over 4.3 feet = 0.85 0z/ton gold over 3.0 feet Karen continues south to Spiral 4 = 0.46 oz/ton gold over 6.8 feet Spiral 3 (I
Slide 16: Fire Creek - H218 Surface Exploration Drilling
Fire Creek - H218 Surface Exploration Dr ing Fem Evaluating four targets; Zeus is a continuation of 2017 success SESH Objectives = Extend known veins to the south at Guard Shack > Bring southern extent of Joyce into inferred resource > Test Vein 09 and other eastern veins for mineralization along tr
Slide 17: Hollister - Underground Definition Drilling
Hollister - Underground Definition Drilling rectal Upgrading inferred resources; Extending resources at east and west limits SEs Legend UG Workings _= Planned DH & Completed DH Wes' Gloria Gloria Extend drilling . to unconformity Clementine Gwenevere Surface drilling to Site preparation ite preparat
Slide 18: Hollister - Surface Drilling in Three Areas
Hollister - Surface Drilling in Three Areas Rowena/Gloria targeting new term; Hatter Graben the future Hatter Graben = Designed to extend current resource to the east and west = Drilling commenced in early August Rowena if West = Collared in East Pit to Gloria define most northerly 4 east-west veins
Slide 19: Midas - Surface Drilling of Trinity
Midas - Surface Drilling of Trinity Trinity Corridor target is south of Midas underground infrastructure Plan Map Proposed Surf Drill Holes Mine Workings Block Model /\ rautt | Mineralized xo e Structure Felseuatts ‘a resource ci vy t anew "nPop set surt i Sooo L 300% Da ole Plarcements — 500 Ft i -