Hecla Mining Company (NYSE:HL) today provided an update on its
drilling programs during the first quarter.
Highlights
There were up to 20 drills operating at 5 mines, all in North
America.
Casa Berardi:
- High-grade extensions defined two zones
in the upper East and West Mines for potential new underground
mining areas.
- The high-grade 113 Zone may link or
intersect the western limit of the 118 Zone to define a significant
resource area.
San Sebastian:
- Potential increase of oxide mine life
through upgraded resource in the Middle Vein.
- Near-surface oxide mineralization
defined at the new El Toro (South) over 5,000 feet along strike and
from surface to 450 feet of depth.
Greens Creek:
- Expanding high-grade, near-surface
resources at the East Ore and Upper Plate zones and upgraded
resources in the NWW and Southwest zones in the central part of the
mine.
- Drilling in the southern part of the
mine on the 200 South Zone has upgraded resources and added to
mineralized trends in that area.
Nevada:
- Some high-grade intersections at Fire
Creek along trend of primary veins and new vein extensions
identified.
- Underground drilling at Hollister has
confirmed and expanded mineralization in the West Gloria and
identified new mineralization to the north.
“We have been successful in discovering high-grade
mineralization at Casa Berardi, San Sebastian, Greens Creek and in
Nevada,” said Mr. Phillips S. Baker, Jr., President and CEO. “Our
focus at Casa Berardi is increasing underground reserves and as
expected, we are seeing the underground resource continuing as the
exploration moves east. In Mexico, the discovery of additional
oxide resources at San Sebastian could extend the mine life. At
Greens Creek we could see reserve increases again this year as the
resources are upgraded. In Nevada, one of our main reasons for the
acquisition is being proved with many high-grade intercepts.”
EXPLORATION
Exploration (including corporate development) expenses were $4.4
million for the first quarter, a $3.0 million decrease over the
first quarter of 2018. Exploration activities remained focused at
Nevada Operations and at San Sebastian, Casa Berardi and Greens
Creek.
Casa Berardi – Quebec
During the first quarter, up to six underground drills were used
to refine stope designs, expand reserves and resources in the 113,
118, 123, 124, 128, 139, 152 and 160 zones and confirm further
potential at depth and to the east and west (Figure 1). An
aggressive underground drilling program has begun with the goal of
upgrading and expanding resources in several promising areas and
potentially extending the underground mine production. Up to three
drills on surface completed in-fill and exploration drilling at the
West Mine Crown Pillar (WMCP), the 128 Zone and at depth of
the Principal Pit and the deeper potential below the 160 Pit
(Figure 2). This drilling is concentrated on high-grade extensions
below currently defined pits that could potentially be mined from
underground or could expand the WMCP pit.
The 113 Zone has been a prolific historic mining center
and recent underground development has provided a platform to
evaluate the eastern-plunge of these high-grade lenses from the
1010-level within the West Mine. Initial drilling has been
encouraging with intersections containing multiple structures with
veins and strong alteration. There is potential at depth for the
113 Zone to intersect or link with the 118 Zone to the east.
High in the mine, drilling of the 118 and 124 zones from the
430-level continue to show the potential to extend and increase the
grade in the Principal area. Recent drill intersections of the
118 Zone at 1200 feet from surface include 0.19 oz/ton gold
over 15.3 feet and 0.53 oz/ton over 3.6 feet. At depth, drilling of
the western extension of the 118 Zone from the 990-level
exploration drift confirmed the continuity of multiple mineralized
lenses to the west and at depth outside the current resource
boundary. Recent intersections including 0.20 oz/ton gold over
9.8 feet suggest an extension of the resources of over 350
feet below the 1200-level.
Drilling of stacked, high-grade lenses of the 123 Zone is
defining a connection between them over 1,900 feet of strike length
and over 3,600 feet down-dip below the 1070-level (Figure 3). In
the upper part of the 123 Zone, step-out drilling from the
750-level to the west shows the continuity of high-grade
mineralization down-plunge for 400 feet and remains open to the
west. Drilling has defined the east extension of the 124
Zone from the 430-level that is down-plunge of the Principal
pit mineralization. Recent drill intersections below the 290-level
include 0.19 oz/ton gold over 6.6 feet and continues to show the
down-dip potential of the 124 lenses to the east and at depth.
Drilling below the proposed Principal Pit on the 128 Zone
has defined a series of high-grade, steeply-plunging lenses that
have been defined vertically for over 600 feet and extend from
surface to below the 290-level (Figure 3). Drill intersections,
including 0.24 oz/ton gold over 5.2 feet and 1.25 oz/ton gold over
1.6 feet, have extended the resource 300 feet and recent step-out
drilling suggests the high-grade mineralization is open at depth
and to the east. Further east, drilling of the 139 Zone
south of the Casa Berardi Fault is showing mineralization is almost
continuous between the West and East mines.
Exploration drilling of the 152 Zone at the west extent
of the East Mine is evaluating the underground potential of
the area between the 148 Zone and depth extensions of the 160 Zone.
Intersections of 0.28 oz/ton gold over 2.8 feet and 0.17 oz/ton
gold over 9.8 feet suggest the mineralization could link the zones
together and provide additional deeper exploration potential.
Underground drilling from the ramp at the 455-level, is currently
targeting the down plunge of these results. Definition drilling
continues at the 300-level of the East Mine to refine the
depth extensions of the 160 Zone below the pit shells.
Drilling has defined multiple lenses that include discrete quartz
veins and massive sulfide styles of mineralization that contain
good gold grades. This mineralization is steeply plunging to the
west and is open to depth.
Drilling of the WMCP to evaluate the open-pit potential
to the west of the West Shaft has upgraded the inferred resource to
reserves that are part of a newly-defined open pit reserve
announced with the year-end reserve update. The drill recent
results also show that the near-surface, mineralized structures
extends beyond the western extent of the WMCP pit and could result
in an expansion of the pit.
In the second quarter of 2019, underground drilling in the West
Mine is planned to evaluate the lower extensions of the 113 and 118
zones. Surface and underground drilling is expected to expand and
refine the 124-128 zones closer to surface. In the East Mine
drilling of the 148, 152 and 160 zones should refine and expand
resources that have underground mining potential. These targets
reflect the numerous opportunities (Figure 4) to extend
mineralization defined in the pits, or near surface, to depth and
potential underground mining.
More complete drill assay highlights from Casa Berardi can be
found in Table A at the end of the release and a presentation
showing drill intersection locations is available by copying and
pasting the following URL into your Internet browser:
http://ir.hecla-mining.com//interactive/newlookandfeel/4130678/Hecla_Q1-2019_ExplorationUpdate.pdf.
San Sebastian - Mexico
During the quarter, two core drill rigs and one reverse
circulation (RC) drill operated at San Sebastian on surface. In
addition, one underground drill rig completed in-fill drilling in
the central and upper portions of the oxide zone along the Middle
Vein. Surface exploration drilling was directed toward shallower
oxide mineralization along the recently discovered El Toro
(South) Vein and West Francine Vein (Figure 5). At the
Middle Vein, in-fill drilling within the oxide (100, 101 and
104) zones intercepted vein intervals with similar grade and width
to the previous exploration drilling results and will provide
important data to guide stope design. Strong drill results include
206.5 oz/ton silver and 0.79 oz/ton gold over 6.1 feet and
49.8 oz/ton silver and 0.25 oz/ton gold over 6.7 feet. This
drilling has upgraded resources and could add oxide mine life at
San Sebastian.
The El Toro (South) Vein is located approximately halfway
between the Andrea Vein resource area to the southeast and the
Esperanza Vein to the northwest (Figure 5). Based on its location
and orientation, this vein may represent the link between these two
known veins with a total prospective strike length of over eight
miles. Near-surface mineralization has been defined by core
drilling for over 5,000 feet along strike and from surface to 450
feet of depth and includes intersections of 0.16 oz/ton gold and
24.1 oz/ton silver over 5.8 feet and 0.35 oz/ton gold and
21.4 oz/ton silver over 4.2 feet (Figure 6). Recent drill
intercepts have identified veins that are up to 25 feet wide
containing bands of sulfide mineralization. To the south, the El
Toro vein has been fault-offset to the east and remains strong and
open to the south. A new vein is located about 125 feet in hanging
wall of the El Toro Vein and recent intersections include 0.26
oz/ton gold and 18.0 oz/ton silver over 9.5 feet. Recently one core
rig has moved from the West Francine Vein to El Toro Vein to
accelerate the drilling in this area.
At the West Francine Vein, located about 1,000 feet west
of past drilling on the Francine Vein, recent drilling continues to
intersect narrow, high-grade veins that has defined mineralization
about 450 feet along strike. A recent drill hole at the eastern end
returned narrow, high-grade intervals including 0.05 oz/ton gold
and 70 oz/ton silver over 1.65 feet. Mineralization in this area is
open laterally and at depth and follow-up drilling in this area is
programmed later in the year. Drilling will continue during the
second quarter to evaluate near-surface oxide mineralization at the
El Toro (South) Vein area. An RC drilling program recently began to
test geochemistry targets around the El Toro Vein discovery and
along the Esperanza to Andrea Vein Corridor (Figure 7).
Separately, a bulk sample is proceeding on the polymetallic
mineralization along the Francine Vein. The material from the bulk
sample will be used for metallurgical studies and a viability test
of the nearby Excellon Mill, where the processing of sulfide ores
from San Sebastian is planned.
More complete drill assay highlights from San Sebastian can be
found in Table A at the end of this release and a presentation
showing drill intersection locations is available by copying and
pasting the following URL address into your Internet browser:
http://ir.hecla-mining.com//interactive/newlookandfeel/4130678/Hecla_Q1-2019_ExplorationUpdate.pdf.
Greens Creek – Alaska
At Greens Creek, drilling in the first quarter and strong assay
results from previous drilling have upgraded and expanded the 200
South, East Ore, NWW, Upper Plate, 9A, and Southwest zone resources
(Figure 8). In the East Ore Zone, intersections from
drilling in the middle and the north end of the resource confirmed
mineralization. Strong assay results included 20.52 oz/ton
silver, 0.05 oz/ton gold, 4.20% zinc and 1.19% lead over 21.9 feet
and 64.04 oz/ton silver, 0.27 oz/ton gold, 6.46% zinc and 2.36%
lead over 7.6 feet (Figure 9). Drilling of targeted gaps between
modeled ore zones intersected mineralization that compares well in
thickness and location to existing trends. Mineralization is still
open higher up in the mine. Drilling is planned to continue
upgrading this resource throughout 2019.
Drilling of the 200 South Zone confirmed three
flat-lying, high-grade lenses that are folded to the west and has
enabled portions of bench mineralization below historic mining to
be upgraded to an indicated resource category and potentially
incorporated into the Life of Mine plan. Recent drilling included
6.87 oz/ton silver, 0.25 oz/ton gold, 15.70% zinc, 5.39% lead over
25.9 feet and 27.66 oz/ton silver, 0.42 oz/ton gold, 4.25% zinc,
and 2.31% lead over 14.4 feet.
Near the mine portal elevation, drilling of the Upper Plate
Zone to the northwest has defined at least two flat-lying zones
that are folded to the east. Recent drill results include
42.15 oz/ton silver, 0.02 oz/ton gold, 10.84% zinc and 4.86%
lead over 16.5 feet along the upper ore band and 93.59 oz/ton
silver, 0.39 oz/ton gold, 4.95% zinc and 2.38% lead over 5.5 feet
in the lower band. Definition drilling results indicate the upper
and mineralization horizon thickens toward the Southwest D Fault
from the east and the lower horizon extends up to 150 feet further
than modeled also towards the Southwest D Fault.
Drilling continued at the southern end and lower portion of the
NWW Zone, filling in a gap between the two ore zones.
Results from recent drilling include 29.90 oz/ton silver, 0.16
oz/ton gold, 4.89% zinc and 2.74% lead over 11.4 feet and 16.87
oz/ton silver, 0.11 oz/ton gold,16.07% zinc and 9.41% lead over 7.2
feet. The drilling shows the mineralization is generally contained
within argillites with a precious metal-rich zone identified west
of the current resource and a base metal-rich zone (16-20% zinc)
extending beyond the current resource. Drilling of the NWW
Zone will continue through the first half of 2019. Drilling
north of the Southwest Zone targeted an area between
the Southwest and NWW zones. Recent drill results include 77.18
oz/ton silver, 0.57 oz/ton gold, 8.05% zinc and 3.94% lead
over 7.5 feet and 94.33 oz/ton silver, 0.40 oz/ton gold, 12.22%
zinc and 4.83% lead over 7.0 feet suggest possible continuity of
high-grade mineralization between the current resources.
Definition drilling in 2019 will focus on the East Ore,
Northwest West, and 9A zones. Exploration drilling in 2019 will
target the southern extension of the 200 South Zone and the Deep
Southwest. Definition drilling in 200 South Zone is planned to
continue to mid-2019 and drilling of the Upper Plate has stopped
but is expected to resume in the fourth quarter.
More complete drill assay highlights from Greens Creek can be
found in Table A at the end of this release and a presentation
showing drill intersection locations is available by copying and
pasting the following URL address into your Internet browser:
http://ir.hecla-mining.com//interactive/newlookandfeel/4130678/Hecla_Q1-2019_ExplorationUpdate.pdf.
Nevada
Fire Creek
The 2019 underground drill program at Fire Creek is designed to
upgrade and expand resources at Spirals 2, 3, 4 and 9 and the Titan
and North zones (Figure 10). There were up to four drill rigs
operating underground at Fire Creek in the first quarter with
definition drilling focusing the southern up-dip of Spiral 2
of the Vein 39 and Joyce mineralization in advance of sill
development, on upper portions of Spiral 3 along the
Honey Runner, Karen, Hui Wu and Joyce structures, and the lower and
upper portions of Spiral 4. The focus of the drilling was to
upgrade resources as underground exploration drilling is
anticipated for later in the year.
The Spiral 2 drilling targeted the up-dip, southern
extents of Vein 39 and Joyce veins. Drilling on Vein 39 encountered
strong alteration in the structures but overall weak assays. The
Joyce program identified continuous veins with moderate grades, but
the best results occurred along Vein 40 which is a ladder vein
between Vein 39 and Joyce. Drill intersections of Vein 40 include
0.80 oz/ton gold over 7.5 feet and 2.24 oz/ton gold over 1.1
feet.
Drilling targeting up-dip veins in the Spiral 3 area
intersected mineralization that is characterized by large,
low-grade zones that contain narrow, high-grade structures with
some continuity. For example, drilling along the Honeyrunner
structure returned grades of 0.17 oz/ton gold over 30.7 feet that
contained an interval of 0.40 oz/ton gold over 2.0 feet (Figure
11). Other intersections in Spiral 3 within strongly argillized
basalts include 0.97 oz/ton gold over 5.0 feet (Vonnie Vein) and
0.27 oz/ton gold over 11.9 feet (Karen Vein). Drilling in the vein
dominated zone was successful in upgrading the model in the 5350
timber raise area. Drilling from Haulage 3, in combination with
mapping and channel sampling in the Spiral 4 development,
indicate that mineralization of the Joyce, Vonnie and Vein 06 is
along the margins of multiple north-striking, steeply-dipping
dikes. Drilling to date indicates that this mineralization is
dominated by a strong clay (argillite) alteration with
semi-continuous, high-grade calcite/quartz veining in structural
zones.
Drilling of the Joyce structural system continues beyond the
modeled resource including high-grade drill intercepts such as 1.28
oz/ton gold over 2.2 feet and 1.11 oz/ton gold over 1.7 feet
(Figure 12). Drilling on the Vonnie Vein had intersections
including of 0.18 oz/ton gold over 11.1 feet and 0.29 oz/ton
gold over 5.4 feet. Other veins not included in the life of mine
intercepted 0.97 oz/ton gold over 0.7 feet and 0.76 oz/ton gold
over 1.2 feet on Vein 3 and 0.26 oz/ton gold over 13.6 feet on Vein
64. Underground drill programs are proposed to upgrade resources
and evaluate new targets throughout the mine (Figure 13).
Surface permits are being finalized to begin drilling on the
Zeus, Kronos, Titan, Far View and Guard Shack targets to extend
mineralization of known resources near the mine.
Hollister
Up to two rigs were active in the West Gloria area during
the first quarter with mine development and preparations proceeding
to evaluate East Clementine and Hatter Graben (Figure 14). At West
Gloria the drilling program from the end of the 5265-level targeted
down-dip extensions of high-grade intersections of the Gloria Veins
to the west and north (Figure 15). This drilling intersected
parallel structures to the north of the Gloria Vein and confirmed
that mineralization is stepping to the northwest as suggested by
mapping of vent breccia/sinters on surface. Drilling below the
level defined high-grade veins about 100 feet below high-grade
intersections (0.32 oz/ton gold, 6.1 oz/ton silver over 11.6 feet)
drilled late in 2018. In-fill and step-out drilling is planned to
determine the continuity and extent of these higher-grade veins.
Further east on the 5265-level drilling intersected mineralization
(0.77 oz/ton gold and 10.9 oz/ton silver over 3.3 feet) about 60
feet above current workings. Additional drilling is planned in what
is interpreted as the upward extension of an east plunging
mineralized zone that is still open up-dip and to the west.
A long exploration drillhole to the north targeted interpreted
structures north of the Gloria veins. Three zones of quartz-calcite
veins and multiple intervals of crackle breccia and stockworks were
intersected including an intersection of 0.38 oz/ton gold and 20.16
oz/ton silver over 2.5 feet. Near the end of the of the hole
adularia alteration was observed which suggests proximity to
epithermal mineralization. A second down-hole is planned to test
below these intercepts.
Drilling is in progress on a 1,500-foot geotechnical hole in the
Hatter Graben decline (Figure 16). The drill rig is then expected
to drill exploration holes targeting the 181, 233, 234 and 243
veins. Definition drilling to upgrade resources in the West Gloria,
5190 Pump Chamber, East Clementine and 5278 areas has begun.
Surface permits are being finalized to begin drilling to extend the
Hatter Graben resource beginning in the second quarter.
More complete drill assay highlights from Nevada (Fire Creek and
Hollister) can be found in Table A at the end of this release and a
presentation showing drill intersection locations is available by
copying and pasting the following URL address into your Internet
browser:
http://ir.hecla-mining.com//interactive/newlookandfeel/4130678/Hecla_Q1-2019_ExplorationUpdate.pdf.
ABOUT HECLA
Founded in 1891, Hecla Mining Company (NYSE:HL) is a leading
low-cost U.S. silver producer with operating mines in Alaska, Idaho
and Mexico, and is a growing gold producer with operating mines in
Quebec, Canada and Nevada. The Company also has exploration and
pre-development properties in eight world-class silver and gold
mining districts in the U.S., Canada, and Mexico.
Cautionary Statements Regarding Forward Looking
Statements
Statements made or information provided in this news release
that are not historical facts are "forward-looking statements"
within the meaning of the Private Securities Litigation Reform Act
of 1995 and "forward-looking information" within the meaning of
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. The material factors or
assumptions used to develop such forward-looking statements or
forward-looking information include that the Company’s plans for
development and production will proceed as expected and will not
require revision as a result of risks or uncertainties, whether
known, unknown or unanticipated, to which the Company’s operations
are subject.
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, litigation,
regulatory and environmental 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 10K and 10-Q reports for a more detailed discussion of
risk 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.
Cautionary Statements to Investors on
Reserves and Resources
Reporting requirements in the United States for disclosure of
mineral properties are governed by the SEC and included in the
SEC's Securities Act Industry Guide 7, entitled “Description of
Property by Issuers Engaged or to be Engaged in Significant Mining
Operations” (Guide 7). Although the SEC has recently issued new
rules rescinding Guide 7, the new rules are not binding until
January 1, 2021, and at this time the Company still reports in
accordance with Guide 7. However, the Company is also a “reporting
issuer” under Canadian securities laws, which require estimates of
mineral resources and reserves to be prepared in accordance with
Canadian National Instrument 43-101 (NI 43-101). NI 43-101 requires
all disclosure of estimates of potential mineral resources and
reserves to be disclosed in accordance with its requirements. Such
Canadian information is included herein to satisfy the Company's
“public disclosure” obligations under Regulation FD of the SEC and
to provide U.S. holders with ready access to information publicly
available in Canada.
Reporting requirements in the United States for disclosure of
mineral properties under Guide 7 and the requirements in Canada
under NI 43-101 standards are substantially different. This
document contains a summary of certain estimates of the Company,
not only of proven and probable reserves within the meaning of
Guide 7, but also of mineral resource and mineral reserve estimates
estimated in accordance with the definitional standards of the
Canadian Institute of Mining, Metallurgy and Petroleum referred to
in NI 43-101. Under Guide 7, the term "reserve" means that part of
a mineral deposit that can be economically and legally extracted or
produced at the time of the reserve determination. The term
"economically", as used in the definition of reserve, means that
profitable extraction or production has been established or
analytically demonstrated to be viable and justifiable under
reasonable investment and market assumptions. The term "legally",
as used in the definition of reserve, does not imply that all
permits needed for mining and processing have been obtained or that
other legal issues have been completely resolved. However, for a
reserve to exist, Hecla must have a justifiable expectation, based
on applicable laws and regulations, that issuance of permits or
resolution of legal issues necessary for mining and processing at a
particular deposit will be accomplished in the ordinary course and
in a timeframe consistent with Hecla's current mine plans. The
terms “measured resources”, “indicated resources,” and “inferred
resources” are Canadian mining terms as defined in accordance with
NI 43-101. These terms are not defined under Guide 7 and are not
normally permitted to be used in reports and registration
statements filed with the SEC in the United States, except where
required to be disclosed by foreign law. The term “resource” does
not equate to the term “reserve”. Under Guide 7, the material
described herein as “indicated resources” and “measured resources”
would be characterized as “mineralized material” and is permitted
to be disclosed in tonnage and grade only, not ounces. The category
of “inferred resources” is not recognized by Guide 7. Investors are
cautioned not to assume that any part or all of the mineral
deposits in such categories will ever be converted into proven or
probable reserves. “Resources” have a great amount of uncertainty
as to their existence, and great uncertainty as to their economic
and legal feasibility. It cannot be assumed that all or any part of
such a “resource” will ever be upgraded to a higher category or
will ever be economically extracted. Investors are cautioned not to
assume that all or any part of a “resource” exists or is
economically or legally mineable. Investors are also especially
cautioned that the mere fact that such resources may be referred to
in ounces of silver and/or gold, rather than in tons of
mineralization and grades of silver and/or gold estimated per ton,
is not an indication that such material will ever result in mined
ore which is processed into commercial silver or gold.
Qualified Person (QP) Pursuant to
Canadian National Instrument 43-101
Dean McDonald, PhD. P.Geo., Senior Vice President - Exploration
of Hecla Mining Company, who serves as a Qualified Person under
National Instrument 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 sample, analytical or
testing procedures for the Greens Creek Mine are contained in a
technical report prepared for Hecla titled “Technical Report for
the Greens Creek Mine, Juneau, Alaska, USA” effective date December
31, 2018, and for the Casa Berardi Mine are contained in a
technical report prepared for Hecla titled "Technical Report for
the Casa Berardi Mine, Northwestern Quebec, Canada" effective date
December 31, 2018 (the "Casa Berardi Technical Report"), and for
the Lucky Friday Mine are contained in a technical report prepared
for Hecla titled “Technical Report on the Lucky Friday Mine
Shoshone County, Idaho, USA” effective date April 2, 2014, and for
the San Sebastian Mine 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.
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 titled “Technical Report for the Fire
Creek Project, Lander County, Nevada, 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. Also
included in these 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 profile on SEDAR at www.sedar.com.
Dr. McDonald reviewed and verified information regarding drill
sampling, data verification of all digitally-collected data, drill
surveys and specific gravity determinations relating to the Casa
Berardi mine. 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.
Table A – Assay Results – Q1 2019 San Sebastian
(Mexico) Zone
Drill HoleNumber
SampleFrom (ft)
SampleTo(ft)
Width(feet)
TrueWidth(feet)
Gold(oz/ton)
Silver(oz/ton)
Zinc(%)
Lead(%)
Copper(%)
Depth FromMine
Surface(feet)
El Toro Vein SS-1710 396.7 404.1 7.4
7.0 0.07 9.4 0.0 0.0 0.0
283 El Toro Vein SS-1716 326.4 338.8
12.4 11.5 0.17 9.4 0.0
0.0 0.0 232 El Toro Vein SS-1720 664.3
669.0 4.7 4.2 0.09 6.7
0.0 0.0 0.0 471 El Toro Vein SS-1738
522.7 526.1 3.4 3.0 0.18
37.4 0.1 0.0 0.0 367 El Toro Vein
SS-1745 304.8 330.2 25.4 22.6
0.06 5.4 0.0 0.0 0.0 214
El Toro Vein Includes 312.9 321.8 8.9
8.0 0.15 13.9 0.0 0.0 0.0
214 El Toro Hw Vein SS-1745 175.48
185.25 9.51 8.94 0.26 18.0 0.0
0.0 0.0 116 El Toro Vein SS-1746
550.4 581.4 31.0 27.1 0.04 5.6
0.0 0.0 0.0 394 El Toro Vein
Includes 563.5 570.2 6.7 5.8
0.16 24.1 0.0 0.0 0.0 394 El
Toro Hw Vein SS-1746 365.82 371.79 6.0
5.9 0.13 8.1 0.0 0.0 0.0
251 El Toro Vein SS-1755 549.0 582.1
33.0 24.5 0.03 3.4 0.0
0.0 0.0 479 El Toro Vein Includes 562.0
568.7 6.7 5.0 0.12 11.9
0.0 0.0 0.0 479 El Toro Vein SS-1756
283.0 287.5 4.5 4.2 0.35
21.4 0.0 0.0 0.0 184 El Toro Vein
SS-1757 629.2 635.8 6.4 4.8
0.14 5.0 0.0 0.0 0.0 535
El Toro Vein SS-1758 385.5 408.5 23.1
20.7 0.10 5.0 0.0 0.0 0.0
260 El Toro Vein SS-1759 221.2 224.9
12.0 9.5 0.21 11.2 0.0
0.0 0.0 516 Middle Vein SS-MV-100-021
209.6 219.0 9.4 6.6 0.89 152.9
1.0 0.5 0.3 374 Middle Vein
SS-MV-100-022 172.4 179.2 6.8 4.8
0.03 21.6 0.1 0.1 0.0 370
Middle Vein SS-MV-100-031 218.6 228.2
9.6 6.7 0.25 49.8 0.3 0.2
0.1 290 Middle Vein SS-MV-104-039 354.9
360.8 5.9 4.1 0.04 18.0 0.1
0.1 0.0 561 Middle Vein SS-MV-104-037
185.0 193.8 8.7 6.1 0.79
206.5 1.4 0.7 0.4 455 Middle Vein
SS-MV-104-045 272.1 278.5 6.5
4.5 0.03 8.2 0.1 0.0 0.0
634 Middle Vein SS-MV-104-043 350.9 358.4
7.5 5.3 0.01 16.7 0.1 0.1
0.0 646 Middle Vein SS-MV-104-041 206.7
214.6 7.9 5.6 1.67 167.9
1.2 0.6 0.3 558 Middle Vein
SS-MV-104-042 195.1 202.4 7.3 5.1
0.05 14.0 0.1 0.0 0.0 557
Middle Vein SS-MV-104-040 295.9 303.8
7.9 5.5 0.02 8.0 0.1 0.0
0.0 570 Middle Vein SS-MV-104-046 205.4
211.0 5.6 3.9 0.12 23.9 0.2
0.1 0.0 432 Middle Vein SS-MV-101-049
147.6 152.6 4.9 4.4 0.02
7.7 0.1 0.0 0.0 652 West Francine Vein
SS-1730 416.3 418.8 2.5 1.7
0.05 70.0 0.0 0.1 0.1 380
Casa Berardi (Quebec)
Zone
Drill HoleNumber
Drill HoleSection
Drill HoleAzm/Dip
SampleFrom
SampleTo
TrueWidth(feet)
Gold(oz/ton)
Depth FromMine
Surface(feet)
Upper Principal - 118 to 124 Zones CBP-0758 12363
25/15 136.5 138.0 3.6 0.53
1278 118 - 124 Area CBP-0758 12371
25/15 151.2 154.3 8.4 0.14 1271
118 - 124 Area CBP-0758 12392 25/15
191.6 196.4 15.3 0.19 1257 118 - 124
Area CBP-0758 12418 25/15 239.6
245.5 16.0 0.09 1246 118 - 124 Area
CBP-0758 12440 25/15 283.2 286.2
6.6 0.19 1233 Lower Principal - 123 Zone
CBP-0750-025 12107 264/15 109.3 110.0
1.6 0.18 2407 123 CBP-0750-025
12100 264/15 115.0 118.0 9.2
0.11 2403 East Mine 160 Zone - 300 Area CBE-0130
15638 324/-20 357.0 361.5 13.8
0.09 1358 160 CBE-0131 15817
359/1 208.5 217.5 28.2 0.10 964
160 CBE-0131 15824 359/1 247.5
253.5 17.7 0.17 964 160 CBE-0131
15829 359/1 276.0 277.5 4.4 0.30
964 160 CBE-0132 15901 22/4
225.0 229.5 11.6 0.06 966 160
CBE-0133 15814 359/-10 233.4 236.4
9.6 0.10 1125 160 CBE-0134 15852
10/18 216.2 235.8 62.3 0.06
834 160 CBE-0135 15779 348/-2
219.0 237.3 59.7 0.06 1032 160
CBE-0135 15779 348/-2 246.0 249.0
9.2 0.24 1039 160 CBE-0135 15779
348/-2 270.0 274.5 14.4 0.13
1048 160 CBE-0136 15781 351/5
209.5 219.9 32.8 0.12 936 160
CBE-0136 15781 351/5 224.5 235.5
34.4 0.10 934 160 CBE-0136 15784
351/5 300.0 301.5 4.8 0.19 927
160 CBE-0136 15786 351/5 326.0
331.5 17.7 0.06 925 160 CBE-0137
15798 355/12 215.6 221.5 17.4
0.12 861 Lower 113 Zone CBW-1141 11357
170/-8 207.0 210.0 9.8 0.12 3357
Lower 118 Zone CBP-0733 11859 4/-39
54.0 58.0 9.8 0.20 3321 118
CBP-0734 11849 354/-35 171.2 172.5
3.3 0.10 3517 118 CBP-0737 11843
344/-40 61.5 62.4 2.6 0.20
3332 118 CBP-0738 11842 344/-30
62.5 63.4 2.6 0.13 3311 118
CBP-0781 11821 344/-12 171.0 172.7
4.9 0.06 3352 Upper 128 Zone CBP-0774
12703 180/-33 409.8 411.5 4.9
0.11 1404 128 CBP-0774 12700
180/-33 422.2 423.6 4.6 0.20
1409 128 CBP-0776 12721 180/-40 401.1
401.6 1.6 0.28 1544 Surface Principal -
128 Zone CBS-19-905 12734 360/-49 434.6
436.5 5.2 0.24 953 128
CBS-19-909 12820 360/-49 376.5 378.4
3.8 0.42 832 128 Including 12820
360/-49 377.1 378.4 1.6 1.25
833 Surface East Mine - 139 Zone CBS-18-887
13948 3/-69 789.0 795.0 11.5
0.10 2171 139 Including 13948 3/-69
792.9 794.2 3.0 0.15 2176
Surface East Mine - 152 Zone CBS-18-888 15330
180/-60 277.3 280.2 8.2 0.07 788
152 CBS-18-892 15374 160/-60 225.0
228.0 5.1 0.07 628 152
CBS-18-893 15333 180/-65 207.8 210.3
2.8 0.28 622 152 CBS-18-893
15330 180/-65 268.5 276.1 9.8
0.17 812 Surface East Mine - 160 Zone CBS-19-894
16398 360/-48 112.1 113.0 2.3
0.19 283 160 CBS-19-894 16399
360/-48 292.5 298.5 14.8 0.06
677 160 CBS-19-904 16702 360/-48 169.5
171.0 3.3 0.16 408
Greens Creek (Alaska)
Zone
Drill HoleNumber
DrillholeAzm/Dip
SampleFrom
SampleTo
TrueWidth(feet)
Silver(oz/ton)
Gold(oz/ton)
Zinc(%)
Lead(%)
Depth FromMine
Portal(feet)
200 South Zone GC5101 348/-44 526.5
553.0 25.9 6.9 0.25 15.7 5.4
-2114 GC5101 348/-44 579.0
580.0 0.9 27.5 1.35 9.0
5.1 -859 GC5106 348/-55 758.5
773.0 14.4 27.7 0.42 4.2
2.3 -2210 GC5109 348/-71 786.5
800.0 13.5 5.3 0.13 5.3
2.1 -2337 GC5111 348/-64 2.0
12.0 7.7 28.6 0.44 6.4
3.6 -1569 GC5114 348/-39 7.5
13.5 4.2 28.2 0.15 9.8
5.2 -1569 GC5114 348/-39 484.0
505.5 18.6 10.1 0.54 20.3
7.1 -1880 GC5116 348/-73 4.5
13.0 4.3 29.5 0.42 4.3
2.3 -1569 GC5125 348/-83 4.5
7.0 2.3 9.1 0.10 2.3 1.2
-1577 GC5133 348/-37 0.0
5.0 4.3 12.5 0.05 3.5 1.9
-1582 GC5133 348/-37 23.0 25.0
1.7 33.1 0.23 3.3 1.7
-1590 GC5137 348/-88 16.0 19.5
3.5 32.9 0.20 8.7 4.3
-1587 GC5141 348/-86 4.0 6.2
2.1 17.9 0.07 6.0 3.1
-1592 GC5141 348/-86 32.0 34.0
1.9 27.5 0.11 3.3 1.9
-1609 GC5147 348/-50 0.0 5.0
4.3 62.3 0.10 5.0 2.4
-1589 GC5147 348/-50 22.5 25.0
2.2 14.2 0.12 6.0 3.6
-1594 GC5150 348/-55 0.0 3.5
3.5 63.2 0.05 6.4 2.9
-1578 GC5154 348/-70 0.0 6.0
6.0 48.4 0.05 5.9 3.3
-1578 Upper Plate Zone GC5102 246/23 321.0
324.6 2.3 28.0 0.11 4.4
2.2 124 GC5105 71/68 177.0
183.0 5.6 25.2 0.03 18.7
8.9 175 GC5107 108/86 140.0
145.5 5.4 20.0 0.02 12.3
7.9 149 GC5107 108/86 200.0
215.0 15.0 17.1 0.01 7.7
4.8 213 GC5108 230/78 140.0
153.0 13.0 26.6 0.09 2.9
1.4 146 GC5108 230/78 203.2
220.0 16.5 42.2 0.02 10.8
4.9 206 GC5108 230/78 253.4
264.0 10.6 7.8 0.03 8.2
3.5 261 GC5110 238/65 144.0
149.0 3.5 16.9 0.07 1.0
0.5 142 GC5112 240/55 155.0
166.0 5.5 93.6 0.39 5.0
2.4 129 GC5112 240/55 301.5
325.4 18.3 8.9 0.02 10.5
3.3 249 GC5115 241/43 192.0
219.0 13.5 38.9 0.08 4.8
2.1 138 GC5117 242/34 288.0
291.5 1.8 15.6 0.04 2.3
1.3 162 9A Zone GC5126 32/38 3.0
6.5 2.5 36.8 0.01 1.6 0.9
2 GC5130 34/29 9.0 13.5
3.2 16.1 0.01 1.0 0.6 2
GC5134 43/24 311.0 316.0 2.5
14.7 0.04 16.2 8.1 102
GC5136 43/12 297.0 300.5 3.4
19.0 0.16 0.1 0.0 49
GC5139 51/25 343.0 346.5 3.0
36.2 0.33 0.1 0.0 127
GC5143 50/17 298.5 301.0 2.3
21.5 0.02 8.3 4.2 79
GC5152 77/28 22.5 25.0 1.3
58.0 0.06 6.2 5.4 0
GC5152 77/28 384.5 393.0 5.2
57.0 0.02 11.3 6.0 162
GC5162 81/36 16.5 22.6 4.7
105.9 0.06 12.7 8.5 5
GC5167 91/9 418.0 431.5 5.9
27.1 0.01 1.9 1.1 58
GC5171 90/33 21.0 26.0 1.9
28.9 0.02 3.4 2.7 -5 Southwest
Zone GC5121 95/-10 244.0 254.5
9.1 64.5 0.56 1.4 0.8 -815
GC5121 95/-10 265.5 270.0
3.9 26.4 0.07 25.3 15.2 -816
GC5127 66/15 152.0 174.0
14.1 22.6 0.30 10.9 4.1 -724
GC5129 66/-3 213.0 216.0
3.0 15.9 0.03 2.5 1.2 -765
GC5129 66/-3 254.0 263.5
9.4 31.1 0.14 10.4 6.7 -770
GC5131 66/-24 201.0 209.0
7.5 77.2 0.57 8.0 3.9 -831
GC5132 66/-37 223.0 228.0
5.0 28.7 0.10 13.5 6.9 -892
GC5135 71/-17 175.0 183.5
7.4 35.6 0.10 1.4 0.8 -803
GC5135 71/-17 231.0 234.0
2.6 21.9 0.03 15.2 9.2 -819
GC5138 71/-26 179.0 230.0
39.1 17.1 0.11 2.4 1.4 -830
GC5142 245/-23 200.5 208.0
7.0 94.3 0.40 12.2 4.8
-779 GC5144 245/-35 214.0 227.3
9.4 14.6 0.13 2.2 1.0
-831 GC5146 246/-45 222.0 241.3
12.4 61.4 0.10 2.0 1.0
-871 GC5146 246/-45 346.0 366.0
19.9 15.4 0.09 4.0 2.8
-784 GC5151 264/-50 254.0 261.0
5.7 20.0 0.07 12.4 6.6
-789 GC5153 258/-21 198.0 201.0
3.0 50.9 0.20 8.3 2.9
-857 Northwest West Zone GC5163 63/13 105.5
106.5 1.0 13.7 0.15 12.0
5.2 -731 GC5163 63/13 114.5
116.0 1.5 33.8 0.15 18.0
8.0 -729 GC5163 63/13 281.9
299.0 14.8 14.1 0.03 3.7
2.2 -682 GC5165 63/6 120.5
123.5 3.0 23.0 0.04 7.1
3.0 -744 GC5165 63/6 130.0
163.3 11.4 29.9 0.16 4.9
2.7 -742 GC5165 63/6 254.0
264.0 10.0 20.6 0.03 9.6
6.3 -727 GC5165 63/6 460.0
470.2 7.2 16.9 0.11 16.1
9.4 -710 GC5170 63/-5 443.7
453.2 9.4 17.3 0.25 23.4
13.8 -788 GC5175 63/-27 360.5
364.5 3.9 16.8 0.04 5.1
2.4 -920 East Ore Zone GC5157 63/9
467.5 473.0 4.7 5.0 0.06 19.9
5.7 709 GC5164 63/-31
330.0 352.0 21.9 20.5 0.05 4.2
1.2 481 GC5166 63/-53
346.0 347.2 1.2 53.0 0.05 17.6
9.3 375 GC5168 63/-71
405.5 413.5 7.6 64.0 0.27 6.5
2.4 265 GC5169 243/-77
357.0 359.5 2.5 5.3 0.10 19.7
5.3 304 GC5172 243/-59
376.0 378.5 2.5 8.6 0.03 21.8
4.9 318
Fire Creek (Nevada)
Zone Vein
Drill HoleNumber
Drill HoleAzm/Dip
SampleFrom(feet)
SampleTo(feet)
Width(feet)
TrueWidth(feet)
Gold(oz/ton)
Silver(oz/ton)
Depth FromMine
Portal(feet)
Spiral 2 Vonnie FCU-1047 105/24 379.0
384.0 5.0 3.8 0.16 0.3 20
Spiral 2 VN 40 FCU-1049 145/41 122.0
129.5 7.5 3.0 0.80 1.4
-53 Spiral 2 including 127.0
129.5 2.5 1.1 2.24 1.3 -51
Spiral 2 VN 40 FCU-1050 146/17 113.0
118.0 5.0 2.1 0.16 0.3
-101 Spiral 2 VN 39 FCU-1050 146/17
163.0 166.0 3.0 1.3 1.24 16.9
-87 Spiral 2 VN 40 FCU-1051 150/29
164.5 166.0 1.5 0.6 0.90
1.6 -55 Spiral 2 VN 12 FCU-1031 218/5
130.5 135.8 5.3 4.4 0.26
0.9 -178 Spiral 2 VN 12 including 130.5
133.0 2.5 2.0 0.48 1.1
-179 Spiral 3 VN 76 FCU-1026 93/25
171.0 174.6 3.6 3.3 0.17 0.3
-315 Spiral 3 VN 76 FCU-1026 93/25
202.0 203.5 1.5 1.2 0.52
0.9 -302 Spiral 3 Karen FCU-1026 93/25
278.5 291.5 13.0 11.9 0.27
0.4 -268 Spiral 3 Honeyrunner FCU-1027
86/20 56.5 58.0 1.5 1.4
0.28 0.3 -368 Spiral 3 VN 59 FCU-1027A
86/20 23.0 28.0 5.0 4.9
0.97 0.8 -379 Spiral 3 VN 59 including
23.0 23.5 0.5 0.5 5.99
5.1 -380 Spiral 3 VN 59 including 23.5
28.0 4.5 4.4 0.41 0.3
-379 Spiral 3 VN 59 FCU-1028 67/28 22.0
57.0 35.0 30.7 0.17 0.5
-369 Spiral 3 VN 59 including 38.0 40.2
2.2 2.0 0.40 1.4 -370 Spiral 3
VN 59 FCU-1061 51/44 37.0 62.0
25.0 23.5 0.16 0.3 -354 Spiral 3
Unknown FCU-1061 51/44 221.0
225.5 4.5 4.3 0.62 3.6 -233
Spiral 3 Unknown FCU-1061 51/44 226.0
235.0 9.0 7.1 0.22 0.5
-228 Spiral 3 VN 59 FCU-1062 34/30 39.0
59.0 20.0 15.3 0.16 0.3
-364 Spiral 4 Vonnie FCU-1021 97/1
391.0 416.0 25.0 23.2 0.17 1.0
-473 Spiral 4 Joyce FCU-1021 97/1
560.0 561.3 1.3 1.1 0.46
1.3 -470 Spiral 4 Joyce FCU-1021 97/1
564.6 567.5 2.9 2.4 0.32
0.5 -470 Spiral 4 Joyce including 567.0
567.5 0.5 0.4 1.02 1.3
-470 Spiral 4 Joyce FCU-1021 97/1 590.0
592.0 2.0 1.7 0.33 0.3
-470 Spiral 4 Joyce FCU-1021 97/1 606.0
621.0 15.0 12.5 0.29 1.3
-469 Spiral 4 Joyce including 610.0
612.0 2.0 1.7 1.11 4.6 -469
Spiral 4 Joyce FCU-1021 97/1 632.0
637.0 5.0 4.2 0.19 0.3
-469 Spiral 4 Vonnie FCU-1023 98/18
461.5 474.5 13.0 11.1 0.18 0.3
-333 Spiral 4 VN 03 FCU-1024 69/-24
516.2 518.5 2.3 2.2 0.21
0.3 -304 Spiral 4 Vonnie FCU-1025
66/-32 601.0 603.5 2.5 2.2 0.23
0.3 -413 Spiral 4 Vonnie FCU-1025
66/-32 609.0 615.0 6.0 5.4
0.29 1.1 -418 Spiral 4 Vonnie
FCU-1025 66/-32 620.4 626.0 5.6
5.0 0.27 1.2 -424 Spiral 4 VN 79
FCU-1025 66/-32 638.0 641.0 3.0
2.4 0.58 0.8 -433 Spiral 4 Joyce
FCU-1025 66/-32 659.5 663.0 3.5
2.8 0.38 0.8 -444 Spiral 4 VN 64
FCU-1025 66/-32 679.0 694.0 15.0
13.6 0.26 1.1 -458 Spiral 4 VN 08
FCU-1025 66/-32 791.0 794.0 3.0
2.8 0.53 0.3 -514 Spiral 4 Joyce
FCU-1037 102/9 647.0 654.5 7.5
6.0 0.27 0.5 -377 Spiral 4
Vonnie FCU-1038 104/1 415.0 424.9
9.9 9.1 0.24 1.3 -473 Spiral 4
Vonnie FCU-1038 104/1 431.9
442.0 10.1 9.2 0.39 1.4 -473
Spiral 4 Joyce FCU-1038 104/1 627.8
628.3 0.5 0.4 0.84 0.6
-469 Spiral 4 Joyce FCU-1038 104/1
640.0 641.0 1.0 0.8 0.37 0.3
-469 Spiral 4 Joyce FCU-1040 64/-24
594.5 601.0 6.5 6.2 0.55
17.2 -337 Spiral 4 Joyce including
594.5 597.0 2.5 2.2 1.28 43.2
-336 Spiral 4 VN 08 FCU-1040 64/-24
804.8 807.5 2.7 2.6 0.25
0.3 -422 Spiral 4 Unknown FCU-1040
64/-24 846.0 850.0 4.0 3.4 0.21
0.3 -439 Spiral 4 Joyce FCU-1041
71/-30 666.0 666.8 0.8 0.7 0.31
46.1 -427 Spiral 4 VN 08 FCU-1041
71/-30 749.4 753.5 4.1 3.8
0.25 0.3 -470 Spiral 4 VN 03
FCU-1057 78/8 351.3 352.0 0.7
0.7 0.97 0.6 -453 Spiral 4 Unknown
FCU-1060 46/4 321.9 322.8 0.9
0.8 0.52 0.3 -480 Spiral 4 Karen
FCU-1060 46/4 327.0 327.5 0.5
0.4 0.52 0.3 -479 Spiral 4 V03
FCU-1060 46/4 477.0 478.5 1.5
1.2 0.76 0.8 -469
Hollister (Nevada)
Zone
Drill HoleNumber
Drill HoleAzm/Dip
SampleFrom(feet)
SampleTo(feet)
Width(feet)
TrueWidth(feet)
Gold(oz/ton)
Silver(oz/ton)
Depth FromMine
Surface(feet)
West Gloria HUC-00070A 000/-02 114.4
126.0 11.6 11.6 0.32 6.1 -296
West Gloria HUC-00070B 000/-02 111.0
116.5 5.5 5.5 0.25 10.2 -296
West Gloria Including 111.0 113.0 2.0
2.0 0.18 1.9 -292 West Gloria
Including 113.0 114.0 1.0 1.0
0.05 1.9 -287 West Gloria Including
114.0 115.0 1.0 1.0 0.80 5.0
-276 West Gloria Including 115.0 118.5
3.0 2.5 0.38 20.2 -258 West
Gloria HUC-00071 28/43 83.2 89.2
6.0 3.3 0.10 3.6 -235 West Gloria
including 83.2 84.5 1.3 0.7
0.30 2.0 -237 West Gloria including
84.5 88.3 3.8 2.1 0.03
3.0 -235 West Gloria including 88.3
89.2 0.9 0.5 0.06 8.1 -234 West
Gloria HUC-00073 50/29 89.2 125.2
3.7 3.3 0.77 10.9 -235 West
Gloria including 124.8 123.5 2.0
0.9 0.28 5.8 -236 West Gloria including
123.5 124.8 1.3 0.6 1.53
18.7 -235
View source
version on businesswire.com: https://www.businesswire.com/news/home/20190508005221/en/
Mike WesterlundVice President - Investor Relations800-HECLA91
(800-432-5291)Investor RelationsEmail:
hmc-info@hecla-mining.comWebsite: http://www.hecla-mining.com
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