Hecla Mining Company (NYSE:HL) today provided an update on its
exploration programs during the first quarter.
Exploration Highlights
- Casa Berardi has expanded the resources
that could increase the potential size of the current East Mine
Crown Pillar (EMCP) pit and the proposed 106, Principal and West
Mine Surface Pillar open pits.
- Underground drilling of the 118, 121
and 123 zones at Casa Berardi continues to discover high-grade
mineralization along trends. Surface drilling has defined
high-grade extensions of the 160 Zone and south perimeter of the
Principal Crown Pillar (123 Zone).
- Drilling of the Lac Germain satellite
occurrence adjoining the Casa Berardi Mine has intersected strong,
near surface mineralization along trend of the mine
mineralization.
- San Sebastian continues to expand
high-grade, polymetallic zones similar to the Hugh Zone on the
Middle and Francine veins. Additional oxide mineralization is
defined along the Professor and East Francine veins.
- Greens Creek exploration drilling
continues to expand the resource along East Ore, Upper Plate, Deep
200 South and Deep Southwest mineralized trends.
“In the first quarter we continue to see our strategy of
investing in exploration adding value, with considerable
exploration success across the portfolio,” said Phillips S. Baker,
Jr., President and CEO. “At Casa Berardi, discoveries near surface
and at depth continue to reinforce our positive opinion of the
long-term potential of the mine, and interesting drill results at
the Lac Germain satellite occurrence reinforce that view. We
continue to expand both the polymetallic and oxide mineralization
zones at San Sebastian, which is important for the future of that
project. Finally, drilling at Greens Creek continues to discover
high-grade mineralization that could enhance the already
exceptional mine economics and mine life. In the second quarter, we
plan to initiate drilling programs at Kinskuch in northern British
Columbia, Little Baldy in Idaho and on surface at Greens
Creek.”
Casa Berardi – Quebec
During the first quarter, six underground drills were used to
refine stope designs, expand reserves and resources in the 118,
121, and 123 zones and confirm further potential at depth and to
the east and west. Up to four drills on surface completed infill
and exploration drilling at the West Mine, Principal, EMCP and 160
Zone. It is anticipated that once the resource is update and pit
optimization studies are completed, these results will extend the
current EMCP pit to the west, and potentially expanded the proposed
Principal and West Mine Surface Pillar pits. This drilling also has
identified high-grade zones that extend from the Principal and 160
pits into the underground.
At the Lower 118 Zone, drilling confirmed the continuity
of multiple mineralized lenses to the east and at depth outside the
current resource boundary. Recent intersections include
0.39 oz/ton gold over 20.7 feet and 0.29 oz/ton gold over 34.1
feet and drilling continues to expand this trend of mineralization.
Drilling along the Lower 121 Zone intersected 1.37 oz/ton
gold over 1.7 feet at the bottom margin of the resource that
appears to link up with stacked lenses of the 123 Zone in
the area. Drilling will continue during the second quarter to
expand the 121 Zone both at depth and evaluate high-grade
extensions to the east to determine if there is a continuous
mineralization to the 123 Zone. Below this elevation drilling of
the central 123 Zone includes 0.44 oz/ton gold over 46.4 feet and
the mineralized zones to the east include an intersection of 0.58
oz/ton gold over 13.8 feet.
Drilling of the 123 Zone below the bottom of the mine returned
0.19 oz/ton gold over 22.9 feet and 3.81 oz/ton gold over 1.9
feet at depth and 0.29 oz/ton gold over 12.0 feet to the west
suggesting these mineralized lenses are open. Drilling to the east
of the lenses intersected 1.63 oz/ton gold over 18.6 feet and
mineralization remains open in that direction. Higher in the mine
at the top of the 123 Zone resource, step-out drilling intersected
1.34 oz/ton gold over 7.9 feet and 1.62 oz/ton gold over 5.0 feet
in a vein that is along a north-south trend. Drilling of stacked,
high-grade lenses of the 123 Zone is defining the connection of
multiple mineralized lenses for over 1,800 feet of strike length
and over 3,500 feet down-dip below the 1010 level.
Surface and shallow underground drilling have identified
extensions of potential pits that are being evaluated for
production. Drilling on the west extension of the current
EMCP pit has returned 0.07 oz/ton gold over 31.8 feet
and 0.05 oz/ton gold over 62.3 feet to define an extension over 750
feet to the west of the current pit outline. Shallow drilling
should be completed during the second quarter, and then the
resource model will be updated for a final pit design. Surface
exploration drilling will follow up on the high-grade mineralized
cores that were defined in this campaign and will be evaluated for
the underground potential.
Surface drilling of the 160 Zone below the limits of the
proposed pit intersected steep west plunging, high-grade veins
within a broad mineralized zone. Recent drill intersections include
0.15 oz/ton over 24.6 feet and 0.14 oz/ton over 19.6 feet. This
drilling campaign is expected to continue from surface in the
second quarter and then switch to underground drilling in the
summer to define these prospective zones to depth. Drilling to the
south of the proposed crown pillar in the Principal Pit area
confirmed continuity and includes intersections of 0.08 oz/ton gold
over 18.6 feet and 0.04 oz/ton gold over 42.5 feet. Surface
exploration and definition drilling for second quarter will focus
on the downward extension of the 129 and 134 zones near the
Principal Pit.
Exploration drilling of the West Mine Surface Pillar to
the west of the West Shaft intersected a mineralized zone of 0.10
oz/ton gold over 11.2 feet and shows the continuity of
mineralization within 800 feet of surface. There is also potential
for deeper, high-grade mineralized shoots with underground mining
possibilities. The exploration campaign should finish in May and a
planned infill program in the crown pillar mining area in the
second quarter could define enough mineralization for a future West
Mine Crown Pillar pit.
Aggressive surface drilling programs are planned through 2018 at
the 123-124 Zone (Principal area), 146/EMCP, West Mine Surface
Pillar and 160 zones to define a possible series of open pits along
the Casa Berardi Fault. Underground drilling is expected to
continue to expand and refine the lower 118, 121 and 123 zones
lower in the mine.
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 at the following:
http://www.snl.com/interactive/newlookandfeel/4130678/Hecla-Q1-2018ExplorationUpdate.pdf.
Casa Berardi Regional – Quebec
Surface drilling at the Lac Germain prospect, 4.5 miles
to the northeast of the Casa Berardi mining lease and along the
Casa Berardi Deformation Zone, has intersected gold-bearing,
sulfide mineralization in sheared veins within altered banded iron
formation and mudstones that could potentially define an inferred
resource that is close to surface. Surface drilling to the west of
the Casa Berardi Mining Lease has extended mineralization along and
north of the Casa Berardi Deformation Zone. Drilling of the
Heva prospect, east of the City of Rouyn-Noranda, has
identified localized concentrations of veining within broad
mineralized halos. All drilling from this season’s program are
completed for each of these areas and assays are pending.
San Sebastian - Mexico
During the quarter, up to five core drill rigs operated,
including two drills concentrated on infill drilling of the
polymetallic zone along the Francine Vein. Three exploration
core drills were directed toward expansion of high-grade
polymetallic mineralization along the Middle and Francine veins and
shallower exploration drilling of oxide mineralization along the
Professor and East Francine veins.
On the Francine Vein, drilling continues to intersect
high-grade, polymetallic mineralization extending 700 feet to the
west and 850 feet east of the current resource for a total of over
5,300 feet of strike length. Recent vein exploration intercepts
suggest this polymetallic mineralization is closer to surface to
the west (within 500 feet of surface). Recent assay results include
35.3 oz/ton silver, 7.9% copper, 23.5% lead, and 18.5% zinc
over 4.4 feet and 10.1 oz/ton silver, 1% copper, 0.7% lead,
and 12.8% zinc over 2.6 feet to the west. Drilling will continue to
the west and at depth where mineralization is open. Further to the
east along the East Francine Vein, areas of oxide mineralization,
including intersections of 38.3 oz/ton silver and 0.16 oz/ton gold
and over 5.2 feet, are open to the east and up-dip. Drilling is now
concentrated on the 1,000 feet of open area that is present between
these new intercepts and the previously defined mineralization in
the shallower portion of the East Francine Vein resource area.
Exploration drilling of the 97 Zone along the West
Middle Vein was directed toward a new zone of high-grade,
polymetallic mineralization with similar mineral characteristics as
the previously discovered polymetallic mineralization on the
Francine Vein. The 97 Zone extends 1,500 feet along strike and
1,100 feet down-dip and is open to the east and at depth. This
mineralization is located about 100 to 300 feet below the new
Middle Vein underground mine ramp and work on a development drift
has begun to facilitate the collection of a bulk sample of the
polymetallic mineralization this year. A recent intersection
approximately 600 feet below the current underground ramp includes
a narrow, but high-grade intercepts of 10.2 oz/ton silver, 3.0%
copper, 10.1% lead, and 18% zinc over 4.4 feet and 9.8 oz/ton
silver, 3.8% copper, 8.5% lead, and 9.4% zinc over 2.8 feet. This
intercept represents the deepest high-grade mineralization at the
Middle Vein to date and demonstrates that, like the Francine Vein,
polymetallic mineralization also occurs in the deeper (>1,200
feet from surface) portions of the Middle Vein. Drilling of this
mineralization along the Middle Vein is expected to continue to
depth and to the east.
The Professor Vein is located approximately 300 feet
south of the Francine Vein and some ore shoots in this vein are
located near a programmed Francine Vein crosscut and could be
accessed by extending this ramp. Drilling of this vein includes
intersections of 19.1 oz/ton silver and 0.05 oz/ton gold over 5.2
feet and 18.1 oz/ton silver and 0.29 oz/ton gold over 3.5 feet.
Drilling continues to expand resources and evaluate polymetallic
targets along the Middle and Francine veins and will also evaluate
near-surface, oxide mineralization at the East Francine, North and
Esperanza veins.
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 at the following:
http://www.snl.com/interactive/newlookandfeel/4130678/Hecla-Q1-2018ExplorationUpdate.pdf.
Greens Creek – Alaska
At Greens Creek, drilling in the first quarter upgraded and
expanded the East Ore, Deep 200 South, Gallagher, East and Upper
Plate zone resources. Strong assay results were also received from
previous drilling on the East Ore, Upper Plate, Deep 200 South and
Deep Southwest zones.
In the East Ore Zone intersections from definition
drilling, including 47.2 oz/ton silver, 0.76 oz/ton gold, 23.1%
zinc and 12.6% lead over 12.9 feet and 10.2 oz/ton silver, 0.09
oz/ton gold, 8.1% zinc and 4.3% lead over 31.5 feet, compare
favorably to previously modeled resource estimates, particularly at
higher elevations. Step-out drilling, including an intersection of
23.2 oz/ton silver, 0.02 oz/ton gold, 3.97% zinc and 1.68% lead
over 10.4 feet, suggest strong mineralization continues beyond the
resource to the south and at depth. Aggressive drilling of the East
Ore Zone will continue throughout 2018 and into 2019 targeting the
northern extent of the East Ore Zone.
Definition drilling of the southern portion of the Deep 200
South Zone, including 28.9 oz/ton silver, 0.05 oz/ton
gold, 2.1% zinc and 1.2% lead over 16.4 feet, confirmed the
high-grades and upgraded it to indicated resource. Exploration
drilling south of the current resource has extended 200 South Bench
mineralization another 400 feet with an intersection of
24.0 oz/ton silver, 0.02 oz/ton gold, 0.9% zinc and 0.5% lead
over 31.9 feet. Recent exploration drilling further south suggests
the bench mineralization remains robust.
Drilling of the Upper Plate Zone suggests the two,
flat-lying ore zones, that are near the mine portal elevation,
could be thicker than modeled and higher in elevation toward the
west; drilling has also extended mineralization to the west and
south. Recent definition drilling includes 32.1 oz/ton silver, 0.18
oz/ton gold, 4.8% zinc and 2.5% lead over 13.8 feet and step out
drillholes intersected 15.9 oz/ton silver, 1.7% zinc and 0.9% lead
over 4.1 feet over 100 feet south of the current resource. Drilling
from underground and surface in the second quarter could expand
this resource further.
At the end of the mine drilling targeting the Deep Southwest
Zone (extension of the Southwest Zone and 200 South Zone)
intersected 22.04 oz/ton silver, 10.18% zinc, and 5.14% lead over
2.49 feet. Drilling of the Gallagher Zone confirmed modeled
thicknesses and may have increased the resource by defining
mineralization further to the west beyond the current resource.
Intersections from this program include 7.2 oz/ton silver, 0.12
oz/ton gold, 10.5% zinc and 5.6% lead over 4.6 feet. Exploration
drilling also intersected ore lithologies west of the Gallagher
Fault over 750 feet away but on trend. Future drilling is planned
to further evaluate this area to see if the current precious
metal-rich mineralization transitions into broader and higher-grade
precious and base metal-rich mineralization.
Underground drilling will continue to focus on the East Ore,
Upper Plate, Deep 200 South zones throughout 2018 with additional
drilling targeting the Lower Southwest, Northwest West and
Southwest Bench zones. Surface drilling will start in June and will
evaluate expansions to the Upper Plate, North Gallagher, Southwest
Bench and 5250 zones.
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 at the following:
http://www.snl.com/interactive/newlookandfeel/4130678/Hecla-Q1-2018ExplorationUpdate.pdf.
Other
Hecla is anticipating a very aggressive exploration program for
the remainder of 2018. Drilling in the next quarter should build on
successes at or near the mines and programs will be initiated at
Kinskuch in northern British Columbia, Little Baldy in Idaho and on
surface at Greens Creek. Field programs are also anticipated at
Heva-Hosco and Opinaca-Wildcat projects in Quebec.
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 an operating mine
in Quebec, Canada. The Company also has exploration and
pre-development properties in seven world-class silver and gold
mining districts in the U.S., Canada, and Mexico, and an
exploration office and investments in early-stage silver
exploration projects in Canada.
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
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
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 March
28, 2013, 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, for the Casa Berardi Mine are contained in a technical
report prepared for Hecla titled "Technical Report on the Mineral
Resource and Mineral Reserve Estimate for the 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 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. Copies of these technical reports are available
under Hecla's profile on SEDAR at www.sedar.com.
The current Casa Berardi drill program was performed on core
sawed in half and included the insertion of blanks and standards of
variable grade in every 24 core samples. Standards were generally
provided by Analytical Solutions Ltd and prepared in 30-gram bags.
Samples were sent to the Swastika Laboratories in Swastika,
Ontario, a registered accredited laboratory, where they were dried,
crushed, and split for gold analysis. Analysis for gold was
completed by fire assay with AA finish. Gold over-limits were
analyzed by fire assay with gravimetric finish. Data received from
the lab were subject to validation using in-built program triggers
to identify outside limit blank or standard assays that require
re-analysis. Over 5% of the original pulps and rejects are sent for
re-assay to ALS Chemex in Val d’Or for quality control.
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 2018 Casa Berardi
(Quebec) Zone Drill Hole Number
Drill Hole Section Drill Hole Azm/Dip
Sample From Sample To True Width
(feet) Gold (oz/ton) Depth From Mine
Surface (feet) Lower 118 - 990 Area
CBP-0990-046 12180 22/-19
65.0 69.0 11.7
0.38 3307.8 118
CBP-0990-047 12170 9/-13
59.3 63.5 12.5
0.23 3281.8 118
CBP-0990-051 12162 9/40
58.0 60.0 4.7 0.28
3103.5 118 CBP-0990-052
12163 9/-35 65.0
77.6 34.1 0.29
3367.6 118 CBP-0990-053
12164 8/-25 62.0
69.0 20.7 0.39
3326.1 Lower 121/123 - 530-550 Area
CBP-0530-380 12368 230/-1
82.0 85.8 7.9 1.34
1729.9 123 CBP-0530-382
12277 215/7 256.2
258.5 1.7 1.37
1637.6 123 CBP-0530-384
12211 245/7 256.2
258.5 3.8 0.42
1629.6 123 CBP-0530-385
12368 226/-5 86.3
90.0 5.0 1.62
1758.5 123 CBP-0530-386
12364 234/-5 84.3
85.0 0.9 5.13
1757.7 123 CBP-0550-146
12370 140/40 13.0
23.0 22.2 0.37
1734.6 123 CBP-0550-148
12375 90/40 17.0
19.0 27.0 0.24
1734.6 Lower 123 - 870-910 Area
CBP-0870-133 12178 224/34
77.0 80.5 8.4 0.23
2670.0 123 CBP-0910-093
12224 179/-29 24.7
29.7 12.0 0.29
2998.1 123 CBP-0910-094
12221 179/-39 157.2
164.0 17.5 0.12
3288.5 123 CBP-0910-099
12243 165/51 99.0
103.0 11.4 0.17
2696.5 Lower 123 - 950 Area
CBP-0950-070 12374 180/1
1.0 5.7 13.8 0.58
3111.7 123 CBP-0950-070
12370 180/1 13.1
27.6 46.4 0.44
3111.0 123 CBP-0950-071
12375 182/56 2.0
5.8 7.8 1.27
3102.6 123 CBP-0950-071
12375 182/56 14.0
21.6 18.6 1.63
3069.8 123 CBP-0950-071
12375 182/56 25.0
27.5 6.0 0.23
3040.0 123 CBP-0950-072
12375 179/32 0.0
7.4 23.1 0.26
3110.8 123 CBP-0950-072
12375 179/32 13.8
28.0 46.4 0.21
3087.9 123 CBP-0950-073
12375 180/-21 1.5
7.5 15.5 0.97
3120.7 123 CBP-0950-074
12375 180/-34 2.9
46.0 86.8 0.23
3122.2 123 CBP-0950-089
12275 180/5 35.2
58.0 74.5 0.23
3104.4 123 CBP-0950-090
12275 180/-7 40.5
49.0 25.5 0.25
3134.5 123 CBP-0950-090
12275 180/-7 52.8
61.4 25.7 0.37
3138.7 123 CBP-0950-092
12275 179/-21 33.9
44.0 23.0 0.33
3170.1 123 CBP-0950-092
12275 179/-21 51.0
54.0 6.6 0.52
3186.1 123 CBP-0950-092
12275 179/-21 56.5
63.4 19.5 0.25
3194.9 123 CBP-0950-093
12274 180/-32 58.0
71.4 29.0 0.35
3232.5 Surface EMCP Pit CBF-148-056
14434 2/-45 219.0
224.4 13.8 0.15
511.0 148 CBF-148-058
14601 26/-46 105.0
116.0 31.8 0.07
262.4 148 CBF-148-058
14608 26/-46 131.0
144.0 37.5 0.04
321.5 148 CBF-148-059
14602 41/-65 129.0
152.0 53.4 0.05
411.2 148 CBF-148-059
14607 41/-65 161.0
181.0 49.7 0.03
494.1 148 CBF-148-060
14589 25/-66 155.3
164.0 19.7 0.04
465.8 148 CBF-148-061
14611 41/-55 123.0
138.0 35.9 0.03
360.0 148 CBF-148-061
14616 41/-55 142.0
149.0 62.3 0.05
399.6 148 CBF-148-061
14627 41/-55 170.0
196.0 62.3 0.04
497.7 148 CBF-148-064
14579 27/-77 164.0
177.0 21.6 0.05
546.8 East Mine 160 CBF-160-071
15867 360/-55 384.0
405.5 69.5 0.05
1031.5 160 CBF-160-072
15855 348/-52 100.5
109.0 22.0 0.17
289.9 160 CBF-160-073
15877 7/-45 75.1
79.6 14.3 0.12
192.4 160 CBF-160-073
15897 7/-45 268.0
276.0 24.6 0.15
601.7 160 CBF-160-073
15902 7/-45 305.0
315.0 32.1 0.12
673.2 160 CBF-160-073
15911 7/-45 370.0
376.4 20.8 0.07
790.5 160 CBF-160-074
15898 6/-52 317.4
325.6 19.6 0.14
764.8 Lower 123 CBP-0657
12530 190/-50 151.5
153.0 3.6 0.35
2855.1 123 CBP-0657 12507
190/-50 288.5 289.2
1.2 0.31 3167.9
123 CBP-0700 12259
161/-23 258.4 266.9
22.9 0.19 3491.1 123
CBP-0703 12188 178/-17
15.0 15.3 1.9
3.81 3241.7 123 CBP-0708
12186 188/25 5.5
7.5 6.4 0.37
3218.2 123 CBP-0709 12183
200/3 11.4 11.7
0.7 1.37 3224.9 Surface -
NW-SW Area CBS-17-817 9858
360/-57 51.0 52.5
3.6 0.10 161.2 NW -SW
CBS-18-832 10327 180/-50
163.5 167.3 6.9
0.04 442.9 NW -SW
CBS-18-836 10229 180/-50
293.7 298.0 11.2
0.10 703.3 Surface Principal Area
CBS-18-831 12512.19
360/-45 90.0 108.0
42.5 0.04 222.4 Principal
CBS-18-841 12571 30/-50
193.2 202.1 18.6
0.08 476.8
San Sebastian (Mexico)
Zone Drill Hole Number Sample From
(ft) Sample To (ft) Width (feet)
True Width (feet) Gold (oz/ton)
Silver (oz/ton) Zinc (%) Lead
(%) Copper (%) Middle Vein
SS-1454 987.4 996.3
9.0 5.4 0.07 12.0
8.5 5.5 4.4
SS-1458 1095.2 1099.7
3.2 3.6 0.00 3.5
3.1 2.8 1.0
SS-1460 1298.4 1304.3
5.1 4.4 0.00 10.2
17.5 10.1 2.6
SS-1486 1551.3 1554.1
3.2 2.8 0.00
9.8 9.4 8.5 3.8
SS-1518 35.2 35.4
0.7 0.5 0.02
6.6 0.0 0.0 0.0
SS-1504 168.6
168.9 1.1 1.0 0.04
17.4 0.1 0.1
0.0 SS-1523 83.7
83.8 0.4 0.4 0.02
2.5 0.0 0.0
0.0 Francine SS-1491
742.8 743.8 1.8
0.6 0.02 41.3 8.6
6.8 6.8 SS-1494
735.4 739.8 4.4
2.6 0.00 10.1 12.8
0.7 1.0 SS-1505
1344.2 1351.3 7.1
4.5 0.00 6.1 15.7
2.7 2.8 SS-1507
1152.7 1162.0 9.3
4.8 0.00 1.6 6.1
3.5 0.1 SS-1513
455.0 456.2 4.2
4.0 0.03 5.6 0.4
0.4 0.3 SS-1529
303.7 305.0 4.1
3.3 0.00 6.4 0.6
0.3 1.8 SS-1540
298.5 299.3 2.8
4.4 0.00 35.3 18.5
23.5 7.9 E. Francine
SS-1484 1353.8 1360.5
6.7 4.0 0.01 8.3
0.7 0.6 0.4
SS-1513 1492.7 1496.7
4.0 4.0 0.03 5.6
0.4 0.4 0.3
SS-1520 402.9 405.0
6.8 6.1 0.10 9.6
1.3 1.2 0.3
SS-1526 480.3 480.8
1.7 1.5 0.07 25.7
0.2 0.3 0.1
SS-1530 286.6 287.5
3.0 2.7 0.06 25.6
0.4 0.3 0.1
SS-1543 278.8 280.5
5.8 5.2 0.16 38.3
0.8 0.4 0.1 Professor
Vein SS-1329 242.5
446.9 4.4 3.5 0.29
18.1 0.2 0.9
0.2 SS-1490 452.5
453.9 1.4 3.5 0.29
14.1 0.6 2.1
1.2 SS-1496 55.51
55.85 1.1 1.1 0.1
15.4 0.2 0.2
0.2 SS-1540 135.0
137.0 2.0 5.2 0.05
19.1 1.0 0.6
2.3
Greens Creek (Alaska)
Zone Drill Hole Number Drillhole
Azm/Dip Sample From Sample To
True Width (feet) Silver (oz/ton)
Gold (oz/ton) Zinc (%) Lead
(%) Depth From Mine Portal (feet) East Ore
GC4739 63/8 466.50
477.50 9.3 19.5
0.07 14.1 4.1 753
GC4766 79/-24
223.40 224.80 1.3
33.3 0.17 9.2 5.5
613 GC4767 84/-51
209.50 219.50 8.7
7.7 0.18 3.4 1.2
476 GC4770 189/-84
313.00 357.50 31.5
10.2 0.09 8.1 4.3
407 GC4777 63/-17
158.20 164.00 5.4
26.5 0.10 6.0 3.2
678 GC4781 75/-38
152.00 160.50 4.9
38.6 0.13 8.2 4.5
623 GC4787 63/-56
174.70 190.00 14.1
27.2 0.07 4.3 2.2
561 GC4788 63/-23
168.50 179.50 10.4
40.5 0.19 13.0 7.2
651 GC4789 63/10
195.70 200.00 3.4
23.4 0.29 6.5 3.4
752
210.00 217.20 5.8
43.2 0.19 7.6 4.1
754 GC4791 63/30
248.70 265.00 11.7
14.6 0.13 4.6 2.3
848 GC4792 63/41
305.50 308.00 1.6
20.3 0.13 5.4 2.3
896 GC4795 63/-42
197.00 200.10 3.0
41.8 0.07 8.5 4.2
575 GC4797 63/-89
294.00 307.00 9.5
12.0 0.04 3.3 2.0
421 GC4799 63/-67
231.00 234.00 2.6
14.9 0.07 3.7 2.1
501 GC4800 63/-10
202.50 208.20 5.6
17.2 0.14 9.0 5.6
677
213.00 220.00 7.0
31.4 0.07 11.7 4.7
675 GC4801 63/37
419.00 423.00 2.7
204.4 0.09 0.0 0.0
968
465.00 481.00 10.7
20.7 0.07 2.1 0.9
998 GC4804 63/14
258.00 262.00 3.6
22.4 0.15 5.4 3.4
782 GC4805 63/32
340.50 348.50 5.2
14.2 0.18 7.3 4.5
897
389.00 399.00 6.6
18.3 0.05 1.0 0.5
918 GC4809 63/20
283.00 298.20 12.9
47.2 0.76 23.1
12.6 814
306.60 308.70 1.8
52.2 0.14 12.1 5.8
825 GC4812 63/-39
201.00 202.50 1.5
24.1 0.00 6.3 3.1
584
230.00 240.50 10.4
23.2 0.02 4.0 1.7
569 GC4814 63/-77
238.00 250.50 11.7
19.3 0.08 22.2
11.3 474 GC4815
243/-70 412.80 420.30
3.4 27.4 0.04 10.0
5.0 316 GC4824
63/9 302.00 332.00
23.3 25.0 0.09 8.9
3.3 759 GC4825
63/-7 240.00 244.50
4.5 61.6 0.56
13.2 7.7 655
GC4827 63/-31 217.00
220.00 3.0 59.4
0.07 16.1 8.9 597
GC4830 63/-58
210.00 214.00 4.0
61.6 0.15 6.9 3.2
533
283.00 286.00 3.0
28.8 0.07 11.2 3.6
459 GC4834 243/-85
297.00 315.50 14.0
10.7 0.14 2.8 1.1
411 Deep 200 South GC4775
337/-44 213.00 230.00
16.4 28.9 0.05 2.1
1.2 -800 GC4816
63/-65 499.50 509.00
4.9 14.3 0.03
1.5 0.9 -1733
538.00 540.00
1.6 8.8 0.05
7.4 4.1 -1770
542.50 544.00
1.2 7.7 0.04
10.2 5.2 -1772
GC4820 63/-77 381.00
383.00 1.1 13.8
0.00 1.3 0.6 -1648
385.00
387.00 1.1 12.5
0.04 1.5 0.6 -1650
GC4738 63/-86
188.50 198.60 5.1
18.0 0.00 0.7 0.5
-1482 GC4759
243/-46 81.00 82.00
1.0 21.2 0.00 25.5
11.6 -1316
268.50 274.00 4.3
25.6 0.00 6.1
3.8 -1473
300.00 303.50 2.7
36.0 0.00 10.4 7.6
-1480 GC4765
243/-63 67.00 76.00
9.0 22.4 0.00 8.4
4.5 -1320
435.00 444.00 5.5
12.2 0.00 2.3
1.2 -1654 GC4771
243/-75 775.00 813.50
31.9 24.0 0.02 0.9
0.5 -2041 GC4772
243/-84 133.50 137.00
0.8 32.3 0.00
2.2 1.0 -1395
1054.00 1057.00
1.5 18.3 0.00
1.0 0.7 -2309
GC4776 63/-86 687.00
688.00 0.4 14.8
0.00 7.4 4.6 -1951
GC4796 243/-17
137.90 152.30 4.4
14.8 0.00 3.4 1.6
-1320 Deep Southwest GC4775
337/-44 1058.50 1061.00
2.5 22.0 0.00
10.2 5.1 -1370 Gallagher
GC4768 243/-80 475.00
478.40 4.6 7.2
0.12 10.5 5.6
-1199 Upper Plate GC4813
190/70 163.50 168.00
3.3 16.0 0.00 0.7
0.3 209 GC4806
90/56 509.00 514.00
4.1 15.9 0.00
1.7 0.9 125
GC4813 190/70 163.50
168.00 4.2 16.0
0.00 0.7 0.3 209
GC4819 91/66
186.00 201.50 13.8
32.1 0.18 4.8 2.5
226
252.00 257.00 4.9
0.2 32.00 0.0 0.0
276
262.00 265.50 3.4
0.2 0.32 0.0 0.0
281
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version on businesswire.com: https://www.businesswire.com/news/home/20180508005531/en/
Hecla Mining CompanyMike Westerlund, 800-HECLA91
(800-432-5291)Vice President - Investor
Relationshmc-info@hecla-mining.comhttp://www.hecla-mining.com
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