Western Copper and Gold Announces Significant Resource Increase at Casino Measured & Indicated Mill Resource Increased 106% to 2.2 Billion Tonnes Gold increased to 14.5 Million Ounces Measured & Indicated + 6.6 Million Ounces Inferred
Western Copper and Gold Announces Significant Resource
Increase at Casino
Measured & Indicated Mill Resource Increased 106% to 2.2 Billion Tonnes
Gold increased to 14.5 Million Ounces Measured & Indicated + 6.6 Million Ounces Inferred
Copper increased to 7.6 Billion Pounds Measured & Indicated + 3.3 Billion Pounds Inferred
VANCOUVER, BC
,
July 14, 2020
/CNW/ - Western Copper and Gold Corporation ("Western" or the "Company") (TSX: WRN) (NYSE
American: WRN) announces an updated resource estimate for its wholly owned Casino Copper-Gold Project ("Casino") in
Yukon,
Canada
.
This new resource estimate is the first estimate since 2010 and includes results from the 2019 drilling campaign, and drilling performed
from 2010 through 2012 that was not available when the 2010 model was developed. It also incorporates an updated geologic model.
The Mill Resource, consisting of the supergene oxide, supergene sulfide, and hypogene zones, increased significantly from the
December 2010
estimate (see Table 1). Measured and indicated Mill Resource tonnes increased 106% from the prior estimate to 2.2
billion tonnes, primarily due to the upgrade of inferred resource to indicated. Copper and gold contained in the new measured and
indicated estimate also increased significantly to 7.4 billion pounds of copper and 12.7 million ounces of gold.
Table 1: Mill Resource in 2020 and 2010
July 2020
Mill Resource at
$5.70
NSR Cut-Off
Class
Tonnes
Copper
Gold
Moly
Silver
CuEq
Copper
Gold
Moly
Silver
M
(%)
(g/t)
(%)
(g/t)
(%)
(M lb)
(M oz)
(M lb)
(M oz)
Measured
145.3
0.31
0.40
0.025
2.1
0.74
986
1.9
80.6
9.8
Indicated
2,028.0
0.14
0.17
0.016
1.4
0.33
6,448
10.9
731.0
90.4
M+I
2,173.3
0.16
0.18
0.017
1.4
0.36
7,434
12.7
811.6
100.2
Inferred
1,430.2
0.10
0.14
0.010
1.2
0.24
3,240
6.4
322.8
53.5
December 2010
Combined Supergene Oxide, Supergene Sulfide, and Hypogene Zones at 0.25% CuEQ Cut-Off
Class
Tonnes
Copper
Gold
Moly
Silver
CuEq
Copper
Gold
Moly
Silver
M
(%)
(g/t)
(%)
(g/t)
(%)
(M lb)
(M oz)
(M lb)
(M oz)
Measured
94
0.34
0.43
0.027
2.21
0.81
695
1.3
56
6.7
Indicated
963
0.19
0.21
0.022
1.66
0.43
3,991
6.6
466
51.3
M+I
1,057
0.20
0.23
0.022
1.71
0.42
4,686
7.9
522
58.0
Inferred
1,696
0.15
0.16
0.019
1.37
0.34
5,440
8.8
720
74.7
Please see notes at the end of this news release.
The heap leach resource also increased from the 2010 estimate and is now 217 million tonnes at a gold grade of 0.27 g/t AuEq (see
Table 2), containing 1.8 million ounces of gold, 13.3 million ounces of silver, and 167 million pounds of copper.
Table 2: Heap Leach Resource at
$5.46
NSR Cut-Off
Class
Tonnes
Copper
Gold
Silver
AuEq
Copper
Gold
Silver
M
(%)
(g/t)
(g/t)
(g/t)
(M lb)
(M oz)
(M oz)
Measured
37.2
0.05
0.45
2.8
0.48
39.3
0.5
3.3
Indicated
180.2
0.03
0.21
1.7
0.23
127.2
1.2
10.0
M+I
217.4
0.03
0.25
1.9
0.27
166.5
1.8
13.3
Inferred
31.1
0.03
0.17
1.7
0.18
17.2
0.2
1.7
Please see notes at the end of this news release.
Increasing the Mill Resource NSR cut-off by 40% to
$8
/t has only a modest effect on the total tonnage, decreasing the total tonnes by
6% and the contained copper and gold by 1.6% and 2.6% respectively (see Table 3). Similarly, increasing the NSR of the Heap Leach
to
$8
/t only drops the contained gold by 20% (see Table 4).
"The 2019 infill drilling program significantly exceeded expectations." said
Paul West-Sells
, President and CEO, "By more than doubling
the measured and indicated mill resource, the Casino project is clearly one of the largest copper-gold projects in the world. The deposit
is still open at depth. This resource and the results of this year's drilling program will be incorporated in an updated Feasibility Study in
the future. We expect that, in addition to the significantly higher number of tonnes, that the strip ratio should decrease significantly due
to the conversion of inferred material to measured and indicated in the pit."
The 2020 resource estimate was developed by Independent Mining Consultants, Inc. of
Tucson, Arizona
("IMC") and are based on a
block model developed by IMC during June 2020. The Measured, Indicated, and Inferred Mineral Resources reported herein are
contained within a floating cone pit shell to demonstrate "reasonable prospects for eventual economic extraction" to meet the definition
of Mineral Resources in NI 43-101.
The resources are constrained by a
$5.70
/t NSR cut-off for the Mill Resource, and
$5.46
/t NSR cut-off for the Heap Leach Resource.
These values are based on operating costs reported in the
January 25, 2013
Casino Project Feasibility Study (the "Feasibility Study"),
adjusted for 2020 labour rates, and material and services costs. Metal prices for the Mineral Resource estimate are
US$ 2.75
per
pound copper,
US$ 1500
per ounce gold,
US$ 18
per ounce silver and
US$ 11
per pound moly. A conversion of
$US 0.75
=
C$ 1.00
was used to convert the commodity prices to C$. Offsite transportation, smelting, and refining charges are also based on those
published in the Feasibility Study.
Note that there has been no change to the Mineral Reserves reported in the Feasibility Study.
Michael G. Hester
, FAusIMM is the independent qualified person responsible for the preparation of the 2020 updated Mineral Resource
estimate described in this news release.
John McClintock
, P.Eng. is the qualified person responsible for the execution of the Casino Project exploration program.
QA/QC including assurance of chain of custody has been implemented. Split core samples are prepared and analyzed by ALS Chemex.
Prepared samples are initially run using a four acid digestion process and conventional multi-element ICP-AES analysis. Additional
assaying for total copper and molybdenum is run using a 4 acid digestion – AES or AAS method to a 0.001% detection limit. Gold
assays are run using 30 gram sample fire assay with an AA finish to a 0.005 ppm detection limit, with samples greater than 10 ppm
finished gravimetrically. The QA/QC procedure involves regular submission of Certified Analytical Standards and property specific
duplicates.
Table 3: Mineral Resource - Mill Material by NSR Cutoffs (C$)
NSR Cog
Class
Copper
Gold
Moly
Silver
CuEq
Copper
Gold
Moly
Silver
($/t)
Mt
(%)
(g/t)
(%)
(g/t)
(%)
( M lb)
( M oz)
( M lb)
( M oz)
Measured
145.3
0.31
0.40
0.025
2.1
0.74
986.5
1.86
80.7
9.76
Indicated
2,028.0
0.14
0.17
0.016
1.4
0.33
6,438.2
10.82
733.2
90.63
5.70
M+I
2,173.3
0.15
0.18
0.017
1.4
0.36
7,424.7
12.68
813.9
100.39
Inferred
1,430.2
0.10
0.14
0.010
1.2
0.24
3,247.6
6.39
324.8
53.34
Measured
144.6
0.31
0.40
0.025
2.1
0.74
985.2
1.86
80.7
9.72
Indicated
1,898.4
0.15
0.17
0.017
1.4
0.34
6,319.6
10.50
724.0
87.28
8
M+I
2,043.0
0.16
0.19
0.018
1.5
0.37
7,304.8
12.35
804.7
97.00
Inferred
1,181.0
0.12
0.15
0.012
1.2
0.27
3,020.3
5.73
309.8
47.08
Measured
139.3
0.32
0.41
0.026
2.1
0.76
973.4
1.84
80.1
9.54
Indicated
1,182.3
0.19
0.21
0.022
1.7
0.42
4,900.0
7.79
583.8
64.24
16
M+I
1,321.5
0.20
0.23
0.023
1.7
0.46
5,873.4
9.63
664.0
73.78
Inferred
390.0
0.19
0.21
0.021
1.6
0.42
1,625.0
2.58
180.6
20.56
Measured
101.3
0.36
0.47
0.030
2.3
0.87
799.4
1.53
67.2
7.59
Indicated
229.6
0.28
0.31
0.032
2.3
0.62
1,402.1
2.25
163.0
16.90
30
M+I
330.9
0.30
0.36
0.032
2.3
0.70
2,201.5
3.79
230.2
24.49
Inferred
74.4
0.32
0.32
0.029
2.4
0.65
521.3
0.77
47.0
5.64
Please see notes at the end of this news release.
Table 4: Mineral Resource – Heap Leach Material by NSR Cutoffs (C$)
NSR Cog
Class
Tonnes
Copper
Gold
Silver
AuEq
Copper
Gold
Silver
($/t)
M
(%)
(g/t)
(g/t)
(g/t)
( M lb)
( M oz)
( M oz)
Measured
37.2
0.05
0.45
2.8
0.48
39.3
0.53
3.29
Indicated
180.2
0.03
0.21
1.7
0.23
127.2
1.23
10.03
5.46
M+I
217.4
0.03
0.25
1.9
0.27
166.5
1.76
13.31
Inferred
31.1
0.03
0.17
1.7
0.18
17.2
0.17
1.70
Measured
35.4
0.05
0.46
2.8
0.49
38.2
0.53
3.21
Indicated
107.3
0.03
0.26
2.0
0.28
71.0
0.89
6.83
8
M+I
142.7
0.03
0.31
2.2
0.33
109.2
1.41
10.04
Inferred
10.6
0.02
0.22
2.3
0.24
4.7
0.08
0.79
Measured
29.5
0.05
0.51
3.0
0.54
33.8
0.48
2.88
Indicated
36.3
0.03
0.34
2.4
0.36
24.0
0.39
2.83
12
M+I
65.8
0.04
0.41
2.7
0.44
57.8
0.88
5.72
Inferred
1.1
0.01
0.30
1.2
0.31
0.1
0.01
0.04
Measured
26.6
0.05
0.54
3.1
0.57
31.0
0.46
2.68
Indicated
17.9
0.03
0.38
2.6
0.40
12.3
0.22
1.52
14
M+I
44.5
0.04
0.47
2.9
0.50
43.3
0.68
4.20
Inferred
0.0
0.00
0.00
0.0
0.00
0.0
0.00
0.00
Please see notes at the end of this news release.
Table 5: Total Mineral Resource
Class
Tonnes
Copper
Gold
Silver
Copper
Gold
Silver
M
(%)
(g/t)
(g/t)
(M lb)
(M oz)
(M oz)
Measured
182.4
0.25
0.41
2.2
1,025
2.4
13.1
Indicated
2,208.3
0.14
0.17
1.4
6,576
12.1
100.5
M+I
2,390.7
0.14
0.19
1.5
7,601
14.5
113.5
Inferred
1,461.3
0.10
0.14
1.2
3,258
6.6
55.2
Please see notes at the end of this news release.
Notes:
2020 Resource:
1
.
The Mineral Resources have an effective date of
3 July 2020
and the estimate was prepared using the definitions in CIM
Definition Standards (
10 May 2014
).
2
.
All figures are rounded to reflect the relative accuracy of the estimate and therefore numbers may not appear to add precisely.
3
.
Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
4
.
Mineral Resources for leach material are based on prices of
US$2.75
/lb copper,
US$1500
/oz gold and
US$18
/oz silver
5
.
Mineral Resources for mill material are based on prices of
US$2.75
/lb copper,
US$1500
/oz gold,
US$18
/oz silver, and
US$11.00
/lb moly.
6
.
Mineral Resources are based on NSR cut-off of
C$5.46
/t for leach material and
C$5.70
/t for mill material.
7
.
NSR value for leach material is as follows:
NSR (C$/t) =
$12.65
x copper (%) +
$41.55
x gold (g/t) +
$0.191
x silver (g/t), based on copper recovery of 18%, gold recovery
of 66% and silver recovery of 26%.
8
.
NSR value for hypogene sulphide mill material is:
NSR (C$/t) =
$60.18
x copper (%) +
$41.01
x gold (g/t) +
$214.94
x moly (%) + 0.355 x silver (g/t), based on recoveries of
92.2% copper, 66% gold, 50% silver and 78.6% moly.
9
.
NSR value for supergene mill material is:
NSR (C$/t) =
$65.27
x recoverable copper (%) +
$42.87
x gold (g/t) +
$142.89
x moly (%) + 0.425 x silver (g/t), based on
recoveries of 69% gold, 60% silver and 52.3% moly. Recoverable copper = 0.94 x (total copper – soluble copper).
10
.
Mineral Resources are reported in relation to a conceptual constraining pit shell in order to demonstrate reasonable prospects for
eventual economic extraction, as required by the definition of Mineral Resource in NI 43-101; mineralization lying outside of the
pit shell is excluded from the Mineral Resource.
11
.
AuEq and CuEq values are based on prices of
US$2.75
/lb copper,
US$1500
/oz gold,
US$18
/oz silver, and
US$11.00
/lb moly,
and account for all metal recoveries and smelting/refining charges.
2010 Resource:
1
.
Technical report entitled "Casino Project, Form 43-101 Technical Report Feasibility Study,
Yukon
,
Canada
– Revision 1" dated
January 25, 2013
, a copy of which is available on the Company's website at
www.westerncopperandgold.com
.
2
.
Prepared by
Conrad E. Huss
, P. E., Thomas L. Drielick, P.E.,
Jeff Austin
, P. Eng.,
Gary Giroux
, P. Eng.,
Scott Casselman
,
P.Geo.
Graham Greenaway
, P. Eng.,
Michael G. Hester
, FAus IMM, and
Jesse Duke
, P. Geo.; each of whom is a qualified
person pursuant to National Instrument 43-101 ("Qualified Person")
3
.
Mineral Resource Cut-off grades: Supergene & Hypogene Zones at CuEq cut-off 0.25%, Leached Cap / Oxide Zones at Cut-off
Au 0.25 g/t, No discount for metallurgical recovery.
Cautionary Disclaimer Regarding Forward-Looking Statements and Information
This news release contains certain forward-looking statements concerning anticipated developments in Western's operations in future
periods. Statements that are not historical fact are "forward-looking statements" as that term is defined in
the United States
Private
Securities Litigation Reform Act of 1995 and "forward looking information" as that term is defined in National Instrument 51-102 ("NI
51-102") of the Canadian Securities Administrators (collectively, "forward-looking statements"). Forward-looking statements are
frequently, but not always, identified by words such as "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible"
and similar expressions, or statements that events, conditions or results "will", "may", "could" or "should" occur or be achieved. These
forward-looking statements may include, but are not limited to, statements regarding perceived merit of properties; mineral reserve
and resource estimates; capital expenditures; feasibility study results (including projected economic returns, operating costs, and
capital costs in connection with the Casino Project); exploration results at the Company's property; budgets; permitting or other
timelines; economic benefits from the mine and/or the access road; strategic plans; market price of precious and base metals; or
other statements that are not statement of fact. In making the forward-looking statements herein, the Company has applied certain
material assumptions including, but not limited to, the assumptions that the circumstances surrounding the COVID-19 pandemic,
although evolving, will stabilize or at least not worsen; that the extent to which COVID-19 may impact the Company, including without
limitation disruptions to the mobility of Company personnel, increased labour and transportation costs, and other related impacts, will
not change in a materially adverse manner; that all regulatory approvals required to complete the Company's planned exploration and
development activities will be received in a timely manner and on acceptable terms; that the Company is able to procure personnel,
equipment and supplies required for its exploration and development activities in sufficient quantities and on a timely basis; and that
general business conditions will not change in a materially adverse manner.
Forward-looking statements are statements about the future and are inherently uncertain, and actual results, performance or
achievements of Western and its subsidiaries may differ materially from any future results, performance or achievements expressed
or implied by the forward-looking statements due to a variety of risks, uncertainties and other factors. Such risks and other factors
include, among others, risks involved in fluctuations in gold, copper and other commodity prices and currency exchange rates;
COVID-19 risks to employee health and safety and a slowdown or temporary suspension of operations in geographic locations
impacted by an outbreak; uncertainties related to raising sufficient financing in a timely manner and on acceptable terms; and other
risks and uncertainties disclosed in Western's AIF and Form 40-F, and other information released by Western and filed with the
applicable regulatory agencies.
Western's forward-looking statements are based on the beliefs, expectations and opinions of management on the date the statements
are made, and Western does not assume, and expressly disclaims, any intention or obligation to update or revise any forward-looking
statements whether as a result of new information, future events or otherwise, except as otherwise required by applicable securities
legislation. For the reasons set forth above, investors should not place undue reliance on forward-looking statements.
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Chris Donaldson, Director, Corporate Development, 604.638.2520 or
CO: Western Copper and Gold Corporation
CNW 07:59e 14-JUL-20