Imperial Reports on Drilling at Mount Polley
imperialmetals.com
News Release
Imperial Reports on Drilling at Mount Polley
Vancouver | April 10, 2017 | Imperial Metals Corporation (the “Company”) (TSX:III) reports results from the completed
underground drilling program at Mount Polley in the Martel and Green zones located beneath the Wight pit, approximately
400 metres east of the recently developed and mined Boundary zone. The results included in this release are from the final
16 holes in this program, MU-17-10 to MU-17-25. Martel zone highlights include 124.32 metres grading 1.36% copper and
0.25 g/t gold in drill hole MU-17-24, which included 18.90 metres grading 2.52% copper and 0.66 g/t gold. The Green zone
best intercept was hole MU-17-18, which intercepted 8.65 metres grading 4.41% copper and 1.95 g/t gold.
The underground exploration program consisted of 6,680 metres in 25 holes, and complements surface drilling done mainly
in 2003-2005. Four drill stations were established at 25-metre intervals along an exploration dr ift about 400 metres east of
the Boundary zone underground workings. Holes were drilled on azimuths ranging from 070° to 090° at shallow to moderate
angles, crossing the Brown Wall fault and into the Martel breccia. The results of the first nine holes were released on February
28, 2017. Following are the significant mineralized intercepts from the final 16 holes:
Martel Zone Intercepts
Hole #
Total
Length (m)
Interval
from (m)
Interval
to (m)
Interval
Length (m) Copper %
Gold g/t
MU-17-10 202.08 104.22 186.86 82.64 1.25 0.15
incl. 165.56 186.86 21.30 1.78 0.04
MU-17-11 279.50 95.00 220.00 125.00 0.87 0.21
incl. 119.97 195.79 75.82 1.19 0.25
MU-17-12 329.18 87.50 240.00 152.50 0.90 0.32
incl. 175.70 240.00 64.30 1.24 0.46
MU-17-13 191.11 105.00 172.50 67.50 1.16 0.13
MU-17-14 243.84 85.00 238.71 153.71 0.98 0.51
incl. 116.50 153.44 36.94 1.64 0.55
incl. 166.55 222.50 55.95 1.07 0.58
MU-17-15 185.01 107.59 163.38 55.79 1.04 0.05
MU-17-16 243.84 91.07 202.50 111.43 0.99 0.26
incl. 118.52 145.00 26.48 1.41 0.26
incl. 158.00 202.50 44.50 1.30 0.39
MU-17-18 295.66 107.50 283.27 175.77 0.87 0.29
incl. 125.60 182.33 56.73 1.02 0.24
MU-17-19 181.97 109.50 167.50 58.00 1.30 0.13
MU-17-20 181.97 139.09 170.0 30.91 0.88 0.07
incl. 157.50 167.50 10.00 1.40 0.08
MU-17-21 289.56 93.67 256.60 162.93 0.79 0.30
incl. 121.84 180.76 58.92 1.10 0.33
incl. 205.88 227.50 21.62 1.08 0.32
MU-17-22 282.55 140.91 175.00 34.09 0.80 0.11
MU-17-23 234.40 94.97 218.63 123.66 1.28 0.38
incl. 152.50 164.96 12.46 2.51 1.11
incl. 195.00 207.50 12.50 2.00 0.15
MU-17-24 231.65 95.82 220.14 124.32 1.36 0.25
incl. 150.00 168.90 18.90 2.52 0.66
incl. 187.40 200.00 12.60 3.10 0.20
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MU-17-25 295.66 135.00 282.50 147.50 1.07 0.59
incl. 256.13 276.38 20.25 2.72 2.65
Green Zone Intercepts
Hole #
Total
Length (m)
Interval
from (m)
Interval
to (m)
Interval
Length (m) Copper %
Gold g/t
MU-17-18 295.66 258.85 267.50 8.65 4.41 1.95
and 281.57 283.27 1.70 7.02 1.73
MU-17-21 289.56 243.50 248.52 5.02 1.97 1.59
and 252.50 256.60 4.10 1.86 0.41
MU-17-25 295.66 279.88 282.50 2.62 9.66 2.66
Note all intervals are the entire length and true widths have not been determined.
This mineralization, originally called the Northeast zone after its 2003 discovery, is believed to have formed in a vertical
hydrothermal breccia body within a complex of monzonitic intrus ions. It now occurs in two large segm ents which were
formerly contiguous but are now separated by the steeply southw est-dipping Brown Wall fault. The upper hanging wall
portion was mined in the Wight pit (2005-2009). The deeper portion was dropped down slightly and offset to the northwest,
and is known as the Martel zone, the top of which was exposed in the bottom of the final Wight pit. In the underground drill
holes, Martel mineralization generally begins immediately after crossing the Brown Wall fault, and consists of chalcopyrite
and bornite disseminated in a polylithic breccia matrix, in fine to coarse infill between clasts, or in veins. Late to post-mineral
monzonitic dikes cut the breccia, the largest being 10-14 metres thick, obliquely bisecting the Martel zone; otherwise, internal
dilution by dikes is limited. Th e Martel zone measures approxi mately 130 metres long, 170 metres high, and 140 metres
wide perpendicular to the Brown Wall fault plane; the southernmost hole in the program indicates the zone is thinning in this
direction but is still open. Along its northeastern fringe, th e Martel zone gives way to monzonitic wall rock and dikes, in
between which are discontinuous lenses of distinct and very hig h-grade, bornite-rich breccia mineralization collectively
termed the Green zone. The Green zone was intercepted in several holes over various but mainly narrow widths, and displays
a roughly vertical disposition; it may be more structurally controlled than the main body of the Martel.
Now that all results have been received, a revised resource estimate will be completed. The objective is to complete a mine
plan and economic analysis as soon as possible.
Chris Rees, P.Geo., the designated Qualified Person as defined by National Instrument 43-101 for the exploration program, has
reviewed this news release. Mount Polley samples for the diamond drilling reported were analysed at the mine laboratory, and
some samples have been sent to Acme Analytical Laboratories in Vancouver for further analysis. A full QA/QC program using
blanks, standards and duplicates was maintained for all diamond drilling samples submitted to the labs. The porphyry and breccia
related mineralized areas at Mount Polley are usually irregular in shape and thus true thicknesses estimates have not been provided
in this release.
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About Imperial
Imperial is a Vancouver based exploration, mine development and operating company. The Company, through its subsidiaries, owns the Red
Chris, Mount Polley and Huckleberry copper mines in British Columbia, and the Sterling gold mine in Nevada. Imperial also holds a 50% interest
in the Ruddock Creek lead|zinc property in British Columbia.
Company Contacts
Brian Kynoch | President | 604.669.8959
Steve Robertson | Vice President Corporate Affairs | 604.488.2669
Gordon Keevil | Vice President Corporate Development | 604.488.2677
Sabine Goetz | Shareholder Communications | 604.488.2657 | [email protected]
Forward-Looking Information and Risks Notice
Forward-looking statements relate to future events or future pe rformance and reflect Company management's expectations or beli efs regarding
future events and include, but are not limited to, specific statements regarding expectations that assays will be obtained by the end of March 2017
for the remaining drill holes in the Mount Polley mine undergro und drilling program targeting the Martel and Green zones locat ed beneath the
Wight pit; expectations that all results, once received, will be loaded into the block model for this area, a revised resource estimate will be completed,
and based on the results to date, mine planning with two options for mine development will be considered; and in general, statements with respect
to the estimation of mineral reserves and mineral resources. In certain cases, forward-looking statements can be identified by the use of words such
as "plans", "expects" or "does not expect", "is expected", "out look", "budget", "scheduled", "estimates", "forecasts", "intend s", "anticipates" or
"does not anticipate", or "believes", or variations of such wor ds and phrases or statements that certain actions, events or re sults "may", "could",
"would", "might" or "will be taken", "occur" or "be achieved" or the negative of these terms or comparable terminology. In this document certain
forward-looking statements are identified by words including "guidance", "expectations", "targeted", "plan", "planned", "estimated", "calls for" and
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"expected". By their very nature forward-looking statements inv olve known and unknown risks, uncertainties and other factors w hich may cause
the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements
expressed or implied by the forward-looking statements. Such factors include, among others, risks related to changes in project parameters as plans
continue to be refined; future prices of mineral resources; possible variations in ore reserves, grade or recovery rates; accidents; dependence on key
personnel; labour pool constraints; labour disputes; availability of infrastructure required for the development of mining projects; delays in obtaining
governmental approvals or financing or in the completion of development or construction activities; counterparty risks associated with sales of our
metals; changes in general economic conditions; increased operating and capital costs; and other risks of the mining industry as well as those factors
detailed from time to time in the Company's interim and annual financial statements and management's discussion and analysis of those statements,
all of which are filed and available for review at imperialmetals.com and sedar.com. Although the Company has attempted to identify important
factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other
factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking statements
will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers
should not place undue reliance on forward looking statements.