Drilling Underway in 2016 to Define East
Rochester Zone for Inclusion in Expanded Mine Plan
Coeur Mining, Inc. (“Coeur” or the “Company”) (NYSE:CDE)
announced the extension at depth of high-grade silver-gold
mineralization at the Rochester Mine in Northwest Nevada at the
East Rochester zone. Favorable results include 179.1 feet of 4.75
oz/t silver and 0.009 oz/t gold, or 5.31 oz/ton silver
equivalent.
Drilling began in 2014 with the first reverse circulation drill
hole encountering 1,300 feet of 1.11 oz/t silver and 0.003 oz/t
gold, or 1.31 oz/ton silver equivalent, over twice the current
average silver reserve grade of 0.53 oz/t silver and equal to the
current average gold reserve grade of 0.003 oz/t. In late 2014, a
core hole was drilled to twin the first reverse circulation hole,
confirming the results and indicating high-grade silver-mineralized
structures occur in the district.
The East Rochester zone is located approximately 1,000 feet east
of mining in the existing Rochester open pit and close to existing
infrastructure. Several successful holes were also drilled in the
eastern side of the Rochester pit to further define mineralization
between current mining activity and the new East Rochester zone
with results supporting possible expansion towards East Rochester.
In 2016, infill and expansion drilling is planned to better define
the continuity of mineralization between current mining activities
and the new East Rochester zone, which has the potential to become
an additional source of nearby, high-grade mineralization, assuming
continued drilling success, resource modeling, and applied mine
engineering.
Drilling
Highlights1:
- Reverse Circulation Hole ER14-001:
- 1,300 feet averaging 1.11 oz/t of
silver and 0.003 oz/t of gold, including 490 feet averaging 1.95
oz/t of silver and 0.005 oz/t of gold
- Twin Core Hole ERC14-002:
- 118.6 feet averaging 2.78 oz/t of
silver and 0.009 oz/t of gold
- 179.1 feet averaging 4.75 oz/t silver
and 0.009 oz/t gold, including 4.1 feet averaging 55.80 oz/t of
silver and 0.081 oz/t of gold
- 17.0 feet averaging 3.71 oz/t silver
and 0.009 oz/t gold
“The East Rochester extension further demonstrates our focus on
adding higher-grade, higher-margin ounces to our mine plans,” said
Hans Rasmussen, Coeur’s Senior Vice President of Exploration. “The
Rochester team identified this target in mid-2014, and it met the
criteria for additional funding through our success-based
exploration program. As a result, $1.6 million of additional
funding was infused into the Rochester drill program and led to
drilling some of the highest grades seen to date from the Coeur
Rochester exploration program, including silver equivalent grades
up to 5.31 oz/t, over 7 times the average reserve grade. These
higher grades could potentially drive lower costs and positively
impact future cash flow. Further drilling is planned in 2016, and
we will be evaluating the economics of the deposit for potential
inclusion in an expanded mine plan.”
Exploration at Rochester is expected to total $3.4 million in
2016, including $1.3 million (expensed) and $2.1 million
(capitalized).
Highlights from Drill Results at Rochester, East: July –
November 2014 Mineralized Interval (feet) Hole From
To Thickness Silver Assays (Oz/short
ton) Gold Assays (Oz/short ton) ER14-001 740
1230 490 1.95 0.005
ER14-002 170 330 160 1.60 0.005 ER14-010 120 360 240 2.11 0.083
ER14-015 970 980 10 6.69 0.010 ER14-022 250 320 70 1.49 0.007
ER14-028 580 600 20 1.83 0.013 ER14-030 560 630 70 1.66 0.002
ER14-031 670 770 100 1.63 0.019 ER14-032 120 440 320 2.02 0.014
ER14-032 490 560 70 2.34 0.003
Core Hole
ERC14-002 310 429 119 2.78 0.009 ERC14-002 764 903 139 5.78 0.008
ERC14-002 1068 1085 17 3.71
0.009 Notes: 1. Drill intercepts from reverse
circulation drill samples were prepared and analyzed by Skyline
Labs in Sparks Nevada. 2. Core hole sample intercepts were split on
site, and were prepared and analyzed by Skyline Labs in Sparks
Nevada. 3. Samples were analyzed by 30 gram fire assay-AA finish
with palladium inquart for silver and gold. Gold over 0.5 ppm and
silver over 50 ppm are reassayed using 30 gram fire
assay-gravimetric finish. 4. Mineralized interval composited assays
calculated using 0.34 ounces/ton Ag cutoff grade. 5. Maximum of 10
feet of internal dilution (less than cutoff grade) permitted in
compositing. 1. Full drill results in the
Appendix.
Rochester Mineral Reserves and Resources
Grade (oz/t)
Ounces Short Tons
Silver Gold Silver
Gold Proven Reserves 96,520,000
0.53 0.003 51,007,000
316,000 Probable Reserves 54,171,000 0.52 0.003 28,336,000
161,000
Total Proven and Probable Reserves
150,691,000 0.53
0.003 79,343,000
477,000 Measured Resources 60,528,000 0.49 0.004 29,709,000
233,000 Indicated Resources 80,423,000 0.47 0.003 37,745,000
250,000
Measured and Indicated Resources
140,951,000 0.48
0.003 67,454,000
483,000 Inferred Resources 59,597,000
0.52 0.003
31,195,000 179,000
Note: Effective December 31, 2015. Assumed metal prices for
proven and probable reserves were $17.50 per ounce of silver and
$1,250 per ounce of gold. Reserves were also evaluated using $15.50
per ounce of silver and $1,150 per ounce of gold to determine
economic viability. It was determined that substantially all
current reserves are economically viable at these lower price
assumptions. Assumed metal prices for mineral resources were $19.00
per ounce of silver and $1,275 per ounce of gold.
About Coeur
Coeur Mining is the largest U.S.-based silver producer and a
significant gold producer with five precious metals mines in the
Americas employing approximately 2,000 people. Coeur produces from
its wholly owned operations: the Palmarejo silver-gold mine in
Mexico, the Rochester silver-gold mine in Nevada, the Kensington
gold mine in Alaska, the Wharf gold mine in South Dakota, and the
San Bartolomé silver mine in Bolivia. The Company also has a
non-operating interest in the Endeavor mine in Australia in
addition to royalties on the Cerro Bayo mine in Chile, the El Gallo
complex in Mexico, the Zaruma mine in Ecuador, and the Correnso
mine in New Zealand. In addition, the Company has two silver-gold
exploration stage projects - the La Preciosa project in Mexico and
the Joaquin project in Argentina. The Company also conducts ongoing
exploration activities in Alaska, Argentina, Bolivia, Mexico, and
Nevada. The Company owns strategic investment positions in several
silver and gold development companies with projects in North and
South America.
Cautionary Statement
This news release contains forward-looking statements within the
meaning of securities legislation in the United States and Canada,
including statements regarding drilling, potential discoveries,
mine life, grades, and production. Such forward-looking statements
involve known and unknown risks, uncertainties and other factors
which may cause Coeur's actual results, performance or achievements
to be materially different from any future results, performance or
achievements expressed or implied by the forward-looking
statements. Such factors include, among others, the risks and
hazards inherent in the mining business (including risks inherent
in developing large-scale mining projects, environmental hazards,
industrial accidents, weather or geologically related conditions),
changes in the market prices of gold and silver and a sustained
lower price environment, the uncertainties inherent in Coeur's
production, exploratory and developmental activities, including
risks relating to permitting and regulatory delays, ground
conditions, grade variability, any future labor disputes or work
stoppages, the uncertainties inherent in the estimation of gold and
silver ore reserves, changes that could result from Coeur's future
acquisition of new mining properties or businesses, reliance on
third parties to operate certain mines where Coeur owns silver
production and reserves and the absence of control over mining
operations in which Coeur or its subsidiaries hold royalty or
streaming interests and risks related to these mining operations
including results of mining and exploration activities,
environmental, economic and political risks of the jurisdiction in
which the mining operations are located, the loss of any
third-party smelter to which Coeur markets silver and gold, the
effects of environmental and other governmental regulations, the
risks inherent in the ownership or operation of or investment in
mining properties or businesses in foreign countries, Coeur's
ability to raise additional financing necessary to conduct its
business, make payments or refinance its debt, as well as other
uncertainties and risk factors set out in filings made from time to
time with the United States Securities and Exchange Commission, and
the Canadian securities regulators, including, without limitation,
Coeur's most recent report on Form 10-K. Actual results,
developments and timetables could vary significantly from the
estimates presented. Readers are cautioned not to put undue
reliance on forward-looking statements. Coeur disclaims any intent
or obligation to update publicly such forward-looking statements,
whether as a result of new information, future events or otherwise.
Additionally, Coeur undertakes no obligation to comment on
analyses, expectations or statements made by third parties in
respect of Coeur, its financial or operating results or its
securities.
Qualified Person
Dana Wills, Coeur's Director, Resource Geology, and a qualified
person under Canadian National Instrument 43-101, supervised the
preparation of the scientific and technical information concerning
Coeur's mineral projects in this news release. Mineral resources
are in addition to mineral reserves and do not have demonstrated
economic viability. Inferred mineral resources are considered too
speculative geologically to have the economic considerations
applied to them that would enable them to be considered for
estimation of mineral reserves, and there is no certainty that the
inferred mineral resources will be realized. For a description of
the key assumptions, parameters and methods used to estimate
mineral reserves and resources, as well as data verification
procedures 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, Canadian investors should refer to the relevant
NI 43-101-compliant Technical Report on file at www.sedar.com.
Cautionary Note to U.S. Investors - The United States Securities
and Exchange Commission permits U.S. mining companies, in their
filings with the SEC, to disclose only those mineral deposits that
a company can economically and legally extract or produce. We may
use certain terms in public disclosures, such as "measured,"
"indicated," "inferred” and “resources," that are recognized by
Canadian regulations, but that SEC guidelines generally prohibit
U.S. registered companies from including in their filings with the
SEC. U.S. investors are urged to consider closely the disclosure in
our Form 10-K which may be secured from us, or from the SEC's
website at www.sec.gov. Silver equivalence assumes a 60:1 silver to
gold ratio.
APPENDIX
Resource Discovery Drill Results at Rochester, East: July
- November 2014 Mineralized Interval (feet) Hole
From To Thickness
Silver Assays (Oz/short ton) Gold Assays (Oz/short
ton) ER14-001 0 10 10 0.36
0.002 ER14-001 30 130 100 0.56 0.001 ER14-001 190 200 10 0.37 0.002
ER14-001 220 580 360 0.87 0.004 ER14-001 600 680 80 0.61 0.003
ER14-001 740 1230 490 1.95
0.005 ER14-001 1270 1300 30 0.40 0.002 ER14-002 0 100 100
0.68 0.002 ER14-002 140 150 10 0.66 0.002
ER14-002
170 330 160 1.60 0.005 ER14-002
360 480 120 0.62 0.002 ER14-002 560 590 30 0.45 0.003 ER14-002 720
740 20 0.80 0.004 ER14-002 900 920 20 0.75 0.010 ER14-003 0 120 120
0.50 0.002 ER14-003 380 560 180 0.53 0.002 ER14-003 600 680 80 0.40
0.000 ER14-003 720 820 100 0.63 0.003 ER14-003 870 1000 130 0.36
0.003 ER14-004 0 70 70 0.45 0.002 ER14-004 140 260 120 0.75 0.007
ER14-004 280 290 10 0.38 0.001 ER14-004 410 480 70 0.49 0.001
ER14-004 500 620 120 0.67 0.003 ER14-004 650 660 10 0.36 0.002
ER14-004 730 740 10 0.36 0.002 ER14-005 30 140 110 0.69 0.002
ER14-005 590 710 120 0.65 0.001 ER14-005 780 880 100 0.74 0.003
ER14-005 910 930 20 0.71 0.000
ER14-005 990
1000 10 1.17 0.004 ER14-005 1020 1060
40 0.51 0.001 ER14-005 1110 1120 10 0.41 0.002 ER14-005 1150 1160
10 0.34 0.002
ER14-005 1230 1240 10
2.98 0.013 ER14-006 0 120 120 0.50 0.002 ER14-006 450
490 40 0.41 0.001 ER14-006 550 560 10 0.38 0.001 ER14-006 600 610
10 0.41 0.000 ER14-006 690 770 80 0.66 0.002
ER14-006
830 900 70 1.10 0.004 ER14-006
1100 1120 20 0.42 0.003 ER14-007 10 50 40 0.43 0.002 ER14-007 60 70
10 0.37 0.002 ER14-007 110 120 10 0.35 0.002 ER14-007 130 150 20
0.38 0.002 ER14-007 190 200 10 0.35 0.008 ER14-007 230 400 170 0.66
0.003 ER14-007 420 490 70 0.52 0.001 ER14-007 550 590 40 0.62 0.001
ER14-007 710 740 30 1.12
0.003 ER14-008 0 50 50 0.39 0.004 ER14-008 60 120 60 0.63
0.003 ER14-008 370 450 80 0.58 0.003 ER14-008 510 520 10 0.38 0.002
ER14-008 540 570 30 0.47 0.002 ER14-008 610 640 30 0.43 0.001
ER14-008 720 740 20 0.45 0.001 ER14-008 830 840 10 0.38 0.002
ER14-008 1000 1010 10 0.41 0.000 ER14-008 1050 1060 10 0.42 0.000
ER14-008 1100 1110 10 0.42 0.002 ER14-008 1130 1140 10 0.34 0.014
ER14-009 40 90 50 0.42 0.002 ER14-009 210 260 50 0.47 0.004
ER14-009 280 340 60 0.44 0.004
ER14-009 360
480 120 0.82 0.002 ER14-009 500 510 10
0.34 0.001 ER14-009 670 680 10 0.70 0.004 ER14-009 800 820 20 0.44
0.004 ER14-010 10 20 10 0.42 0.001 ER14-010 70 80 10 0.98 0.002
ER14-010 120 360 240 2.11
0.083 ER14-010 380 390 10 0.55 0.005 ER14-010 450 460 10
0.62 0.002 ER14-010 690 730 40 0.75 0.005 ER14-010 790 800 10 0.35
0.005 ER14-011 50 100 50 0.44 0.001 ER14-011 140 150 10 0.41 0.000
ER14-011 230 240 10 0.51 0.000 ER14-011 510 520 10 0.44 0.002
ER14-011 770 780 10 0.35 0.001 ER14-012 10 60 50 0.71 0.002
ER14-012 80 90 10 0.44 0.002 ER14-012 140 150 10 0.34 0.000
ER14-012 330 380 50 0.36 0.002 ER14-012 400 450 50 0.49 0.002
ER14-012 520 530 10 0.37 0.000 ER14-012 710 740 30 0.46 0.003
ER14-012 770 790 20 0.64 0.003 ER14-012 820 840 20 0.59 0.003
ER14-012 860 870 10 0.34 0.001 ER14-013 10 40 30 0.52 0.004
ER14-013 50 60 10 0.48 0.002 ER14-013 370 380 10 0.48 0.002
ER14-013 520 530 10 0.47 0.002 ER14-013 710 720 10 0.38 0.005
ER14-013 740 750 10 0.44 0.001 ER14-013 780 800 20 0.45 0.001
ER14-014 70 90 20 0.68 0.002 ER14-014 280 290 10 0.43 0.003
ER14-014 430 570 140 0.61 0.002
ER14-014 620
640 20 1.21 0.006 ER14-014 730 760 30
0.78 0.003 ER14-014 840 850 10 0.46 0.001 ER14-015 80 90 10 0.45
0.000 ER14-015 390 530 140 0.54 0.003 ER14-015 650 670 20 0.72
0.002
ER14-015 970 980 10 6.69
0.010 ER14-016 60 110 50 0.78 0.003 ER14-016 390 400 10 0.37
0.004 ER14-016 420 450 30 0.70 0.005 ER14-016 470 480 10 0.39 0.003
ER14-016 500 530 30 0.35 0.002 ER14-016 610 620 10 0.44 0.002
ER14-016 690 700 10 0.34 0.005 ER14-017 0 10 10 0.34 0.003 ER14-017
30 40 10 0.35 0.003 ER14-017 360 380 20 0.42 0.002 ER14-017 410 440
30 0.61 0.001 ER14-017 500 520 20 0.39 0.002 ER14-017 540 560 20
0.49 0.000 ER14-018 60 70 10 0.51 0.003 ER14-018 160 170 10 0.54
0.002 ER14-018 220 230 10 0.34 0.003 ER14-018A 220 230 10 0.45
0.006 ER14-018A 270 280 10 0.34 0.009 ER14-018A 320 340 20 0.35
0.000 ER14-018A 370 460 90 0.39 0.004 ER14-018A 480 640 160 0.48
0.002 ER14-019 80 120 40 0.49 0.005 ER14-019 260 320 60 0.48 0.004
ER14-019 400 410 10 0.42 0.000 ER14-019 530 540 10 0.66 0.001
ER14-019 610 620 10 0.42 0.001 ER14-020 40 60 20 0.49 0.003
ER14-020 130 140 10 0.36 0.002 ER14-020 180 230 50 0.62 0.002
ER14-020 290 310 20 0.41 0.006 ER14-020 360 490 130 0.52 0.002
ER14-020 510 640 130 0.85 0.003 ER14-021 160 170 10 0.38 0.001
ER14-021 390 400 10 0.38 0.003 ER14-021 490 500 10 0.35 0.001
ER14-022 0 120 120 0.63 0.002
ER14-022 250 320
70 1.49 0.007 ER14-022 350
480 130 1.09 0.004 ER14-022 500 540 40
0.50 0.006 ER14-022 570 590 20 0.58 0.005 ER14-022 630 680 50 0.37
0.005 ER14-022 790 800 10 0.54 0.002
ER14-022 830
850 20 1.27 0.007 ER14-022 870 880 10
0.36 0.003 ER14-022 920 930 10 0.41 0.003 ER14-022 950 1090 140
0.72 0.004 ER14-022 1110 1270 160 0.57 0.004 ER14-023 0 30 30 0.56
0.002 ER14-023 50 60 10 0.41 0.001
ER14-023 150
200 50 1.11 0.019 ER14-023 260 300 40
0.56 0.008 ER14-023 320 330 10 0.45 0.003 ER14-023 410 540 130 0.84
0.005 ER14-023 600 610 10 0.63 0.004 ER14-023 740 810 70 0.61 0.007
ER14-023 860 870 10 0.45 0.007
ER14-023 920
930 10 1.19 0.030 ER14-024 30 50 20
0.52 0.003 ER14-024 180 200 20 0.57 0.006 ER14-024 220 230 10 0.39
0.005 ER14-024 280 290 10 0.35 0.001 ER14-024 350 470 120 0.88
0.006 ER14-024 530 540 10 0.46 0.007 ER14-024 570 590 20 0.53 0.003
ER14-024 630 780 150 0.94
0.005 ER14-024 930 1020 90
0.97 0.003 ER14-025 0 10 10 0.45 0.002 ER14-025 160
190 30 0.34 0.006 ER14-025 200 220 20 0.35 0.004 ER14-025 410 470
60 0.62 0.002 ER14-025 500 530 30 0.50 0.002 ER14-025 620 630 10
0.60 0.101 ER14-026 0 20 20 0.44 0.002 ER14-026 160 210 50 0.48
0.004 ER14-026 250 270 20 0.57 0.005 ER14-026 310 470 160 0.78
0.004 ER14-026 500 510 10 0.35 0.000 ER14-026 610 630 20 0.45 0.006
ER14-026 660 950 290 0.77 0.003 ER14-026 1110 1120 10 0.34 0.001
ER14-026 1150 1160 10 0.34 0.004 ER14-028 0 90 90 0.41 0.002
ER14-028 110 120 10 0.36 0.001 ER14-028 140 150 10 0.46 0.002
ER14-028 170 260 90 0.57 0.006
ER14-028 290
400 110 0.74 0.004 ER14-028
580 600 20 1.83 0.013 ER14-029 0
10 10 0.54 0.005 ER14-029 20 70 50 0.45 0.002 ER14-029 130 150 20
0.47 0.004 ER14-029 220 230 10 0.35 0.004 ER14-029 310 470 160 0.53
0.001 ER14-029 580 600 20 0.64 0.004 ER14-030 0 70 70 0.44 0.002
ER14-030 140 210 70 0.60 0.006 ER14-030 230 240 10 0.77 0.003
ER14-030 260 360 100 0.49 0.002
ER14-030 420
460 40 1.14 0.002 ER14-030 490 500 10
0.49 0.006
ER14-030 560 630 70
1.66 0.002 ER14-030 710 720 10 0.37 0.002 ER14-031
400 410 10 0.36 0.002
ER14-031 670 770
100 1.63 0.019 ER14-032 0 80 80 0.59 0.005
ER14-032 120 440 320 2.02
0.014 ER14-032 490 560 70
2.34 0.003 ER14-032 590 620 30 0.71 0.002 ER14-033 10
40 30 0.58 0.002 ER14-033 100 110 10 0.36 0.005 ER14-033 160 170 10
0.34 0.002 ER14-033 180 190 10 0.39 0.004 ER14-033 220 460 240 0.79
0.004 ER14-033 500 600 100 0.96 0.003 ER14-033 620 640 20 0.68
0.007 ER14-033 670 700 30 0.51 0.003 ER14-034 0 30 30 0.68 0.002
ER14-034 120 130 10 0.35 0.000
ER14-034 170
230 60 1.01 0.005 ER14-034 300 320 20
0.42 0.010 ER14-034 360 370 10 0.66 0.003 ER14-034 400 500 100 0.61
0.004 ER14-034 630 770 140 0.70 0.003 ER14-034 810 830 20 0.50
0.006 ER14-034 990 1000 10 0.53 0.001 ER14-035 170 200 30 0.77
0.007 ER14-035 230 260 30 0.60 0.003 ER14-035 280 290 10 0.44 0.003
ER14-035 440 460 20 0.83 0.002 ERC14-002 110 120 10 0.46 0.000
ERC14-002 310 429 119 2.78
0.009 ERC14-002 461 501 40 0.58 0.003 ERC14-002 518 566 48
0.55 0.003 ERC14-002 592 643 51 0.66 0.003
ERC14-002
724 903 179 4.75 0.009 ERC14-002
907 1014 106 0.95 0.002 ERC14-002 1024 1045 20 0.75 0.001
ERC14-002 1068 1085 17 3.71
0.009 ERC14-002 1108 1159 51 0.45 0.001 ERC14-002 1170 1223
53 0.98 0.003 ERC14-002 110 120 10 0.46
0.000 Notes: 1. Drill intercepts from reverse
circulation drill samples were prepared and analyzed by Skyline
Labs in Sparks Nevada. 2. Core hole sample intercepts were split on
site, and were prepared and analyzed by Skyline Labs in Sparks
Nevada. 3. Samples were analyzed by 30 gram fire assay-AA finish
with palladium inquart for silver and gold. Gold over 0.5 ppm and
silver over 50 ppm are reassayed using 30 gram fire
assay-gravimetric finish. 4. Mineralized interval composited assays
calculated using 0.34 ounces/ton Ag cutoff grade. 5. Maximum of 10
feet of internal dilution (less than cutoff grade) permitted in
compositing.
View source
version on businesswire.com: http://www.businesswire.com/news/home/20160229005705/en/
For Additional InformationCoeur Mining, Inc.Rebecca
Hussey, 312-489-5827Senior Analyst, Investor
Relationswww.coeur.com
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