Hecla Provides Exploration Update

Rhea-AI Summary

Hecla Mining Company (NYSE:HL) announced promising exploration updates from its projects, indicating a focus on reserve replacement and resource expansion. Drilling at Greens Creek and Casa Berardi is on track for completion by year-end. Notable findings at Midas include high-grade gold and silver mineralization, with recent drill results showing up to 1.99 oz/ton gold and 8.2 oz/ton silver. Greens Creek's surface exploration has revealed copper and zinc-rich zones, suggesting potential new mineralized horizons. The company remains optimistic about further discoveries as drilling initiatives progress.

Positive

• Drilling at both Greens Creek and Casa Berardi is on schedule for reserve replacement by year-end.
• High-grade mineralization at Midas includes recent drill results of 1.99 oz/ton gold and 8.2 oz/ton silver.
• Greens Creek drilling intersected copper and zinc-rich zones, indicating potential for additional mineralized horizons.

Negative

• Continuity of grade at El Bronco vein remains challenging despite good vein widths and grades.
• Drilling at El Toro encountered low grades, though it shows increasing grades at depth, suggesting further drilling is necessary.

COEUR D'ALENE, Idaho--(BUSINESS WIRE)-- Hecla Mining Company (NYSE:HL) today released an update on its latest exploration results.

Highlights

• Drilling at both Greens Creek and Casa Berardi is on track to replace reserves by year end.
• Midas exploration at the Green Racer Sinter continues to expand high-grade gold and silver mineralization for over 2,000 feet of strike and 1,250 feet of dip extent. An initial resource is expected to be announced in early 2022.
• Greens Creek surface exploration drilling at the Lil’Sore target intersected copper and zinc-rich zones of mineralization that are indicative of a fertile feeder stockwork zone. This mineralization is stratigraphically below the targeted mine contact indicating potential for an additional mineralized mine horizon at depth or laterally.
• Hollister’s decline has advanced and drilling of the Hatter Graben can begin in the fourth quarter.

“While focused, our exploration efforts have spanned our three operating mines and eight of our exploration properties,” said Phillips S. Baker, Jr., President and CEO. “As we have adapted to operating in a pandemic, we have been able to increase drilling and expect growth in reserves and resources. We continue to have exciting results in Nevada where at Midas we are seeing similar structural controls on high-grade mineralization at Green Racer Sinter as those observed at the mine’s historically producing veins leading us to add a third drill rig and at Hollister where underground drilling will begin soon. At Greens Creek, both underground and surface drilling are giving results that should lead to reserve replacement and additional drilling in the Lil’Sore area.”

Midas

At Midas, two core rigs focused on offsetting and expanding high-grade mineralization along strike and up and down dip at the Green Racer Sinter. A third core rig arrived at Midas in July, and all three core rigs are continuing to test the Green Racer Sinter structure and additional East Graben Corridor targets including the South Green Racer and Green Racer Sinter structural intersection, and Little Opal target areas.

Drilling at Midas continues to intersect high-grade gold and silver mineralization along the Sinter structure with recent drillhole intersections including 1.99 oz/ton gold and 8.2 oz/ton silver over 1.7 feet estimated true thickness and 0.30 oz/ton gold and 136.2 oz/ton silver over 0.9 feet estimated true thickness. Mineralization is hosted in quartz and carbonate veining within the Sinter structure which is locally fractured due to post-mineral fault movement. While still early in our exploration program, high-grade mineralization has been intersected over 2,000 feet of strike length, 1,250 feet of dip and continues to be open for expansion both along strike and dip.

Controls on mineralization at the Green Racer Sinter appear to be associated with a cymoid loop structural architecture, similar to the architecture controlling mineralization at the Colorado Grande and associated veins mined at Midas in the past. The geology of this architecture consists of narrow but high-grade en echelon vein segments that connect or intersect with a periodicity creating wider zones of high-grade mineralization. The current exploration program is designed to test this model.

Hollister

Development drifting is advancing to the Hatter Graben with the first drill station now available for geotechnical and exploration drilling. Underground exploration drilling is planned to target additional veins south of the current resource model and intersect and confirm the upper portions of the veins in the current resource.

Greens Creek

Drilling at Greens Creek is on track to replace reserves with two underground core rigs upgrading and expanding resources in the Upper Plate, 9A, and Northwest West zones. Upper Plate drilling targeted the southern portion of the zone along 100 feet of strike length and expands mineralization to the west and to the south. Highlights from this drilling include intercepts containing 28.29 oz/ton silver, 0.01 oz/ton gold, 4.69% zinc and 2.77% lead over 8.1 feet occurring within a zone of multiple tight folds. Drilling in the 9A Zone targeted the southern portion of the zone along 150 feet of strike length and includes intercepts containing 20.10 oz/ton silver, 0.08 oz/ton gold, 9.83% zinc and 6.09% lead over 24.3 feet and 40.81 oz/ton silver, 0.14 oz/ton gold, 3.96% zinc and 1.51% lead over 6.0 feet, both at the targeted horizon. Northwest West drilling focused on the northern portion of the zone along 150 feet of strike length and expands mineralization to the north. Highlights from this drilling include 24.99 oz/ton silver, 0.10 oz/ton gold, 3.89% zinc and 1.76% lead over 11.5 feet at the targeted horizon.

Two surface core rigs also began drill testing the Lil’Sore trend target located three miles north-northwest of the mine and a southerly extension of the mine’s 5250 Zone. Our second drillhole into the Lil’Sore target intersected four zones of mineralized footwall rocks consistent with VMS feeder zone ‘stringer’ style of mineralization. These intercepts include mineralized sericite phyllite grading 0.6 oz/ton silver, 12.2% zinc, and 0.8% copper over 6.6 feet true width and massive fine-grained base metal sulfide and mineralized chloritic rock containing 1.7 oz/ton silver, 4.4% zinc, and 6.6% copper over 3.3 feet true width. These copper and zinc-rich intercepts are hosted in footwall rocks showing a fertile feeder stockwork zone. As the entire stratigraphic package has been overturned after mineralization, these results indicate potential for a mineralized mine contact at depth or laterally.

Casa Berardi

At Casa Berardi, six underground and three surface core rigs focused on definition and exploration drilling in the West, Principal, and East Mine areas and is on track to replace reserves and expand resources by year end. Drilling in the WMCP Pit targeting infill and extensions to the current resource has expanded mineralization and improved the grade. Grade improvement is related to two wide high-grade infill drillhole intercepts including 0.25 oz/ton gold over 55.4 feet and 0.17 oz/ton gold over 11.2 feet. Expansion of mineralization in the WMCP Pit occurred from drilling to extend the current resource boundary up to the bedrock-overburden contact and intercepts include 0.05 oz/ton gold over 20.3 feet. Exploration drilling in the Lower 123 Zone, targeting multiple stacked ore lenses below and to the east of the current resource boundary expands mineralization in both directions with intersections of 0.17 oz/ton gold over 65.6 feet including 0.36 oz/ton gold over 13.1 feet.

San Sebastian

Drilling at San Sebastian continued in both the El Bronco and El Toro vein systems. Drilling completed in the El Bronco vein targeted gaps in the drill data. While we have had good vein widths and grades at the current level of drilling at El Bronco, continuity of grade has been challenging. Analysis of the geochemistry, vein phase stratigraphy, and vein textures all indicate that the current levels of drilling at both the El Bronco and El Tigre veins are high in the epithermal system. Deeper drilling is now in progress at both the El Bronco and El Tigre veins targeting the more favorable levels at depth as well as feeder zones to the mineralization we have intersected to date.

Drilling at El Toro tested the down-faulted portion of the vein to the southeast of the resource area. Although both drillholes were low grade, the grades in this offset segment of the El Toro vein are increasing at depth so additional deeper drilling is planned.

More complete drill assay highlights can be found in Table A at the end of the release.

Other Programs

Exploration activities are ongoing at Lucky Friday, Heva-Hosco, Aurora, Fire Creek, Republic, and Kinskuch. The programs range from land acquisition to surface mapping and sampling to target identification and drilling. The programs are in locations with significant geologic potential, good infrastructure, and favorable jurisdictions.

Cautionary Statements

Statements made which are not historical facts, such as strategies, plans, anticipated payments, litigation outcome (including settlement negotiations), production, sales of assets, 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. 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 and results. Refer to the company's Form 10-K and 10-Q reports for a more detailed discussion of factors that may impact expected future results. The company undertakes no obligation and has no intention of updating forward-looking statements other than as may be required by law.

Qualified Person (QP) Pursuant to Canadian National Instrument 43-101

Kurt D. Allen, MSc., CPG, VP - Exploration of Hecla Mining Company and Keith Blair, MSc., CPG, Chief Geologist of Hecla Limited, who serve 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 news release. 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 titled “Technical Report for the Greens Creek Mine” effective date December 31, 2018, and for the Lucky Friday Mine are contained in a technical report titled “Technical Report for the Lucky Friday Mine Shoshone County, Idaho, USA” effective date April 2, 2014, for Casa Berardi are contained in a technical report titled "Technical Report on the mineral resource and mineral reserve estimate for Casa Berardi Mine, Northwestern Quebec, Canada" effective date December 31, 2018 (the "Casa Berardi Technical Report"), and for the San Sebastian Mine, Mexico, are contained in a technical report prepared for Hecla 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. Information regarding data verification, surveys and investigations, quality assurance program and quality control measures and a summary of sample, analytical or testing procedures for the Fire Creek Mine are contained in a technical report prepared for Klondex Mines, dated March 31, 2018; the Hollister Mine dated May 31, 2017, amended August 9, 2017; and the Midas Mine dated August 31, 2014, amended April 2, 2015. Copies of these technical reports are available under Hecla's and Klondex's profiles on SEDAR at www.sedar.com. Mr. Allen and Mr. Blair reviewed and verified information regarding drill sampling, data verification of all digitally collected data, drill surveys and specific gravity determinations relating to all the mines. The review encompassed quality assurance programs and quality control measures including analytical or testing practice, chain-of-custody procedures, sample storage procedures and included independent sample collection and analysis. This review found the information and procedures meet industry standards and are adequate for Mineral Resource and Mineral Reserve estimation and mine planning purposes.

ABOUT HECLA

Founded in 1891, Hecla Mining Company (NYSE:HL) is the largest silver producer in the United States. In addition to operating mines in Alaska, Idaho and Quebec, Canada, the Company owns a number of exploration properties and pre-development projects in world-class silver and gold mining districts throughout North America.

Table A – Assay Results – 2021

Midas (Nevada)
Zone	Drill Hole Number	Drillhole Azm/Incl	Sample From (feet)	Sample To (feet)	Drilled Width (feet)	Est. True Width (feet)	Gold (oz/ton)	Silver (oz/ton)	Depth From Surface (feet)
Sinter	DMC-00397	263/-53	1392.1	1393.0	0.9	0.8	0.40	1.1	-1103
Sinter	DMC-00403	222/-46	2161.6	2162.4	0.8	0.7	0.03	0.2	-1484
Sinter	DMC-00404B	217/-59	1393.6	1395.8	2.2	1.7	1.99	8.2	-1216
Sinter	Including		1393.6	1395.0	1.4	1.1	2.78	12.5	-1216
Sinter	DMC-00406	202/-47	1522.9	1525.0	2.1	0.9	0.30	136.2	-1177
Sinter	DMC-00407	220/-45	1300.7	1301.5	0.8	0.3	0.00	0.0	-950
Sinter	DMC-00408	220/-45	1347.2	1349.4	2.2	0.8	0.00	0.1	-958
Sinter	DMC-00410	226/-52	1531.9	1534.6	2.7	2.1	0.07	20.3	-1251
Sinter	Including		1533.5	1534.6	1.1	0.8	0.16	45.7	-1251
Sinter	DMC-00411	214/-53	844.7	845.9	1.2	1.0	0.10	16.5	-684
Sinter	DMC-00413	43/-46	637.8	638.4	0.6	0.4	0.24	0.1	-406
Sinter	DMC-00415	29/-53	1741.6	1742.4	0.8	0.7	0.01	4.0	-1318
New Vein	DMC-00409	355/-50	665.8	666.9	1.1	0.8	0.26	0.2	-513

Casa Berardi (Quebec)
Zone	Drill Hole Number	Drill Hole Section	Drill Hole Azm/Dip	Sample From (feet)	Sample To (feet)	True Width (feet)	Gold (oz/ton)	Depth From Mine Surface (feet)
Surface WMCP 105 Zone	CBF-105-047	10785	358/-63	428.0	463.8	23.0	0.05	-422
105 Zone	CBF-105-047	10785	358/-63	526.4	585.5	27.6	0.05	-523
105 Zone	CBF-105-047	10785	358/-63	624.8	646.8	12.5	0.04	-596
105 Zone	CBF-105-054	10650	2/-49	383.8	407.7	17.4	0.03	-308
105 Zone	CBF-105-054	10650	2/-49	469.4	541.2	52.8	0.04	-382
105 Zone	CBF-105-062	11010	181/-45	278.1	305.0	24.6	0.04	-212
105 Zone	CBF-105-063	10980	181/-45	372.0	398.5	20.3	0.05	-271
105 Zone	CBF-105-064	10935	183/-47	442.8	504.8	55.4	0.25	-333
105 Zone	Including		183/-47	442.8	458.2	14.4	0.86	-318
105 Zone	CBF-105-064	10935	183/-47	531.4	590.4	40.0	0.07	-391
105 Zone	CBF-105-065	10935	183/-59	516.6	536.3	11.2	0.17	-441
105 Zone	Including		183/-59	531.4	534.0	2.0	0.55	-443
UG 118 Zone	CBP-0909	11940	5/-33	206.6	216.5	8.2	0.12	-3283
118 Zone	Including		5/-33	209.9	213.2	2.3	0.36	-3283
118 Zone	CBP-0909	11955	5/-33	539.2	555.6	14.4	0.13	-3411
118 Zone	Including		5/-33	539.2	540.5	1.0	0.68	-3408
118 Zone	Including		5/-33	552.7	555.6	2.3	0.37	-3414
118 Zone	CBP-0912	11925	350/-13	530.0	560.2	29.5	0.13	-3349
118 Zone	Including		350/-13	530.0	532.0	2.0	0.66	-3344
118 Zone	CBP-0914	11940	16/-34	157.4	167.3	8.5	0.13	-3297
118 Zone	Including		16/-34	159.4	160.7	1.0	0.94	-3295
118 Zone	CBP-0914	11970	16/-34	482.2	495.3	11.5	0.18	-3477
118 Zone	Including		16/-34	485.4	488.7	3.0	0.23	-3476
118 Zone	Including		16/-34	492.0	495.3	2.6	0.34	-3480
118 Zone	CBP-0946	11985	4/-10	526.4	541.2	14.8	0.16	-3333
118 Zone	CBP-0947	11925	18/-36	468.1	483.1	14.8	0.18	-3481
118 Zone	Including		18/-36	474.6	477.2	2.3	0.35	-3481
118 Zone	Including		18/-36	481.5	483.1	1.6	0.29	-3485
UG 119 Zone	CBP-0992	11805	158/36	310.6	334.9	19.7	0.13	-1570
119 Zone	Including		158/36	317.2	319.1	1.3	0.54	-1573
119 Zone	CBP-0992	11820-11805	158/36	355.2	395.6	34.1	0.12	-1539
119 Zone	Including		158/36	390.0	395.6	3.9	0.30	-1530
119 Zone	CBP-0994	11825	149/44	431.3	450.0	11.5	0.14	-1456
119 Zone	Including		149/44	446.1	450.0	2.3	0.41	-1451
UG Upper 123 Zone	CBP-0938	12285	176/45	293.6	307.0	10.2	0.30	-1567
123 Zone	Including		176/45	298.5	303.4	3.9	0.83	-1657
123 Zone	CBP-0938	12285	176/45	293.6	303.4	8.5	0.34	-1569
123 Zone	CBP-0959	12405	197/44	311.3	326.4	11.8	0.37	-1119
123 Zone	Including		197/44	313.9	322.8	6.6	0.62	-1119
UG Lower 123 Zone	CBP-0886	12360	22/-62	408.4	434.3	21.6	0.13	-3855
123 Zone	Including		22/-62	424.8	433.0	6.9	0.33	-3861
123 Zone	CBP-0891	12330	331/-41	300.8	316.8	13.1	0.13	-3703
123 Zone	Including		331/-41	313.9	316.8	1.6	0.40	-3707
123 Zone	CBP-0891	12330	331/-41	326.4	344.7	14.4	0.16	-3720
123 Zone	Including		331/-41	326.4	335.9	6.6	0.25	-3717
123 Zone	CBP-0891	12330	331/-41	469.7	482.2	9.8	0.30	-3809
123 Zone	Including		331/-41	475.6	482.2	4.9	0.52	-3810
123 Zone	CBP-1025	12390	42/-76	665.5	753.1	65.6	0.17	-4163
123 Zone	Including		42/-76	685.8	705.5	13.1	0.36	-4150
Surface 159 Zone	CBF-160-130	16140	4/-54	597.0	635.3	27.9	0.05	-485
159 Zone	Including		4/-54	605.2	610.1	3.8	0.21	-480
159 Zone	CBS-21-025	16260	5/-69	681.6	690.4	4.6	0.24	-647
Surface 160 Zone	CBF-160-153	16095	360/-72	831.2	837.1	5.9	0.24	-787
160 Zone	CBF-160-154	16090	360/-56	728.2	740.0	11.8	0.05	-602
160 Zone	CBF-160-154	16090	360/-56	754.7	778.0	23.3	0.04	-626
160 Zone	CBF-160-154	16090	360/-56	807.9	836.4	28.5	0.08	-666
160 Zone	CBS-21-026	16140	4/-69	1100.1	1104.0	2.6	0.22	-999
160 Zone	CBS-21-027	16360	4/-62	1564.6	1574.4	5.9	0.10	-1334

Greens Creek (Alaska)
Zone	Drill Hole Number	Drill Hole Azm/Dip	Sample From (feet)	Sample To (feet)	True Width (feet)	Silver (oz/ton)	Gold (oz/ton)	Zinc (%)	Lead (%)	Depth From Mine Portal (feet)
East Ore	GC5512	63/-37	330.5	333.3	2.8	6.1	0.06	9.6	2.5	456
East Ore	GC5513	63/-19	278.0	283.0	1.3	29.7	0.10	4.9	2.2	565
East Ore	GC5515	243/-87	462.5	471.0	8.5	5.4	0.20	17.5	3.4	241
East Ore	GC5520	243/-69	436.0	445.0	8.3	7.4	0.24	25.6	6.2	243
East Ore	GC5523	243/-55	518.0	519.5	1.4	15.7	0.04	18.7	7.7	235
East Ore	GC5524	243/-49	504.5	509.2	4.6	38.6	0.09	17.4	3.8	278
East Ore	GC5529	63/-81	527.5	533.5	5.5	9.3	0.05	18.9	5.5	140
East Ore	GC5530	63/-48	354.7	358.0	3.2	12.5	0.19	16.7	2.8	404
East Ore	GC5532	243/-64	496.5	498.7	2.0	4.0	0.05	15.2	5.6	219
East Ore	GC5533	243/-54	547.8	549.8	2.0	4.8	0.05	19.9	1.9	230
East Ore	GC5535	243/-49	557.0	566.0	8.6	19.9	0.06	4.7	1.7	246
East Ore	GC5541	243/-83	528.5	530.5	2.0	33.1	0.27	20.0	9.1	139
East Ore	GC5545	63/-73	500.7	504.3	3.5	30.8	0.05	9.4	2.0	182
East Ore	GC5545	63/-73	513.5	514.5	1.0	17.1	0.16	24.3	6.2	171
East Ore	GC5547	63/-50	376.0	379.0	2.3	6.8	0.10	8.2	3.4	381
East Ore	GC5549	63/-61	435.5	438.0	1.8	7.5	0.17	12.0	3.6	291
Upper Plate	GC5537	63/26	180.0	185.0	1.6	14.5	0.26	2.0	0.8	92
Upper Plate	GC5540	243/48	212.0	220.5	8.1	28.3	0.01	4.7	2.8	174
Upper Plate	GC5542	243/60	149.8	152.0	1.9	67.2	0.30	1.5	0.7	147
Upper Plate	GC5544	63/79	145.0	148.0	2.7	12.2	0.01	12.2	4.6	160
Upper Plate	GC5552	243/80	167.5	170.0	2.4	27.9	0.01	7.3	4.0	181
Upper Plate	GC5553	243/66	199.0	204.0	4.6	9.9	0.04	17.4	6.4	199
Upper Plate	GC5555	243/56	236.5	247.5	7.9	19.9	0.05	3.6	2.1	201
Upper Plate	GC5558	63/75	150.0	161.0	8.4	15.6	0.09	2.9	1.3	162
Upper Plate	GC5558	63/75	170.0	173.0	2.3	14.1	0.02	10.4	2.0	180
Upper Plate	GC5558	63/75	185.5	195.7	7.8	11.6	0.02	12.2	3.1	196
Upper Plate	GC5559	63/63	207.5	210.7	1.5	15.4	0.17	0.3	0.1	201
Upper Plate	GC5560	63/89	155.2	158.5	3.2	17.8	0.05	4.9	2.8	173
Upper Plate	GC5560	63/89	171.7	175.5	3.7	10.4	0.01	13.0	3.6	187
Upper Plate	GC5563	90/71	171.8	174.8	2.9	8.6	0.01	13.5	3.0	179
9A	GC5501	63/-39	312.5	317.5	4.0	22.3	0.13	18.3	11.0	-115
9A	GC5501	63/-39	402.0	432.0	24.3	20.1	0.08	9.8	6.1	-174
9A	GC5514	63/-31	396.0	401.8	5.7	10.7	0.04	11.5	3.8	-112
9A	GC5516	63/-46	265.0	271.0	6.0	6.2	0.05	25.2	8.2	-82
9A	GC5516	63/-46	309.0	315.0	6.0	40.8	0.14	4.0	1.5	-116
NWW Zone	GC5565	243/-76	378.0	390.0	11.5	25.0	0.10	3.9	1.8	-482
NWW Zone	GC5569	267/-73	397.0	403.5	5.1	13.6	0.04	4.7	1.8	-499

Zone	Drill Hole Number	Drill Hole Azm/Dip	Sample From (feet)	Sample To (feet)	True Width (feet)	Silver (oz/ton)	Gold (oz/ton)	Zinc (%)	Lead (%)	Copper (%)	Depth From Mine Portal (feet)
Lil'Sore	PS0417	63/-60	193.0	200.4	6.6	0.6	0.00	12.2	0.0	0.8	1577
Lil'Sore	PS0417	63/-60	296.0	300.5	3.3	1.7	0.00	4.4	0.0	6.6	1489
Lil'Sore	PS0417	63/-60	345.0	364.9	17.3	0.1	0.00	2.0	0.0	0.1	1438
Lil'Sore	PS0417	63/-60	386.5	399.1	10.1	0.1	0.00	2.5	0.0	0.2	1408

San Sebastian (Mexico)
Zone	Drill Hole Number	Drill Hole Azm/Dip	Sample From (feet)	Sample To (feet)	True Width (feet)	Silver (oz/ton)	Gold (oz/ton)	Depth From Surface (feet)
El Bronco Vein	SS-2103	35/-58	1219.9	1229.7	6.5	0.1	0.00	1024
El Bronco Vein	SS-2105	35/-60	1460.2	1483.6	17.1	0.4	0.01	1250
El Bronco Vein	SS-2106	35/-60	858.4	895.9	24.1	1.1	0.01	737
El Bronco Vein	Including		887.7	895.9	5.3	3.3	0.03	750
El Bronco Vein	SS-2107	35/-42	62.1	71.7	7.8	3.9	0.05	40
El Bronco Vein	SS-2114	35/-60	602.6	611.3	6.6	0.8	0.01	512
El Bronco Vein	SS-2116	35/-60	629.9	662.1	18.9	0.1	0.00	551
El Bronco Vein	SS-2117	35/-60	1293.7	1303.8	7.2	0.9	0.01	1096
El Bronco Vein	SS-2120	35/-60	999.6	1021.2	14.7	3.0	0.07	851
El Bronco Vein	Including		1010.5	1019.4	6.0	6.8	0.15	858
El Bronco Vein	SS-2123	35/-60	875.8	891.7	10.4	0.1	0.00	761
El Bronco Vein	SS-2125	35/-60	1221.7	1225.7	2.9	0.1	0.00	1042
El Bronco Vein	SS-2126	35/-60	1237.3	1240.2	2.2	0.0	0.00	1027
El Bronco Vein	SS-2127	35/-55	2126.4	2130.5	3.1	0.1	0.00	1702
El Bronco Vein	SS-2128	35/-55	2244.3	2267.8	20.2	0.0	0.00	1659
El Toro Vein	SS-2108	75/-50	1298.2	1299.5	1.2	0.1	0.00	967
El Toro Vein	SS-2111	75/-50	1878.0	1881.7	3.6	2.4	0.01	1162

Category: Press Release

View source version on businesswire.com: https://www.businesswire.com/news/home/20210914005348/en/

For further information, please contact:



Russell Lawlar

Senior Vice President, CFO and Treasurer



Jeanne DuPont

Senior Communications Coordinator



800-HECLA91 (800-432-5291)

Investor Relations

Email: hmc-info@hecla-mining.com

Website: www.hecla-mining.com

Source: Hecla Mining Company

FAQ

What are the latest exploration results from Hecla Mining Company (HL)?

Hecla Mining Company reported significant exploration results, including high-grade gold and silver at Midas and potential new mineralized zones at Greens Creek.

When is Hecla Mining expecting to announce an initial resource for the Green Racer Sinter?

An initial resource for the Green Racer Sinter is expected to be announced in early 2022.

What does the drilling at Greens Creek indicate for Hecla Mining's reserves?

Drilling at Greens Creek is on track to replace and expand reserves, with recent findings suggesting significant mineralization.

What challenges is Hecla Mining facing in their exploration efforts?

Hecla Mining faces challenges in grade continuity at the El Bronco vein and low grades in the El Toro vein, necessitating further exploration.