NovaCopper Reports Significantly Increased Resources at Bornite Deposit: 5.7 Billion Pounds of Copper Inferred and 334 Million Pounds of CopperĀ Indicated
March 18, 2014
- In-Pit Indicated Resources of 14.1 million tonnes at an average grade of 1.08% copper containing 334 million pounds of copper at a 0.5% copper cutoff
- In-Pit Inferred Resources of 109.6 million tonnes at an average grade of 0.94% copper containing 2.3 billion pounds of copper at a 0.5% copper cutoff
- Below-Pit Inferred Resources of 55.6 million tonnes at an average grade of 2.81% copper containing 3.4 billion pounds of copper at a 1.5% copper cutoff
- The latest resource estimate represents an 87% increase in contained copper in Indicated Resources and a 73% increase in contained copper in Inferred Resources at the Bornite Project
- Mineralization remains wide open in multiple directions
March 18, 2014 - Vancouver, British Columbia - NovaCopper Inc. (TSX, NYSE-MKT: NCQ) ("NovaCopper" or "the Company") is pleased to announce the release of an updated National Instrument 43-101 ("NI 43-101") compliant resource estimate for the Bornite deposit for its Upper Kobuk Mineral Projects ("UKMP") located in the highly prospective Ambler mining district of northwest Alaska. This release incorporates the results of the 2013 core drilling and assaying of previously un-sampled or partially sampled historical Kennecott drill core. The previous mineral resource estimate was described in the previous Technical Report for the Bornite Deposit, South Reef and Ruby Creek Zones, prepared for NovaCopper by BD Resource Consulting Inc. ("BDRC") and Sim Geological Inc. ("SGI") which was made public on February 8, 2013 and has an effective date of January 31, 2013.
Highlights
- At a base case 0.50% copper cutoff grade, the Bornite Project is estimated to contain in-pit Indicated Resources of 14.1 million tonnes at 1.08% copper or 334 million lbs of contained copper (see Table 1 for details).
- At a base case 0.50% copper cutoff grade, the Bornite Project is estimated to contain in-pit Inferred Resources of 109.6 million tonnes at 0.94% copper or 2.3 billion lbs of contained copper (see Table 1 for details).
- At a base case 1.50% copper cutoff grade, the Bornite Project contains below-pit Inferred Resources of 55.6 million tonnes at 2.81% copper or 3.4 billion lbs of contained copper (see Table 2 for details).
- Contained copper in Indicated resources have increased from 179 to 334 million pounds which constitutes an 87% increase in contained metal (see Figure 1 for details).
- Contained copper in Inferred resources have risen from 3,292 to 5,696 million pounds which constitutes a 73% increase in contained metal (see Figure 1 for details).
"We are extremely pleased with the Bornite resource expansion. We have added more high quality copper resources, at a grade of approximately 1% copper, for a potential open-pit mine scenario. Also, at a grade of approximately 2.8% copper, we have the potential for an underground mine scenario. Importantly, given that the amount of contained metal in the in-pit resource is insensitive to changes in the copper cutoff grade, the project could have great flexibility in mining selectivity during future mine planning," said Mr. Rick Van Nieuwenhuyse, NovaCopper's President and Chief Executive Officer.
Mr. Van Nieuwenhuyse continued, "In less than three years, our exploration team has increased six fold the scale of the Bornite deposit. When combined with our high-grade (5.9% copper equivalent 1 ) potentially open-pit resource at Arctic, we have nearly achieved our initial objective of defining approximately 10 billion pounds of copper equivalent resources in the district. This robust new Bornite resource remains open along the one-kilometer-wide northern margin of the deposit as well as the up-dip projection of the South Reef zone. Given the scale of the mineralization, which now measures 1.5 kilometers along strike and 2 kilometers down dip, we expect that further exploration could potentially make the Bornite deposit of similar size and grade to the geologically comparable Mount Isa deposit of Queensland Australia - which ultimately extracted 405 million tonnes grading 2.12% copper 2 ."
The new resource estimate incorporates results from 216 diamond drill
holes including 17 holes totaling 8,142 meters drilled by the Company
during the 2013 drilling campaign, as well new assays from 42 historical
Kennecott drill holes comprising 14,457 meters with partial or no
assays. The deposit remains open to expansion to the north: the Lower
Reef mineralization is open over a 1 km wide front along the north end
of the deposit. The company plans to resume drilling during the second
or third quarter of 2014 with the goal of expanding the resource to the
north and northeast. Additional re-assaying of partially sampled
Kennecott era drilling is also anticipated.
Table 1 shows the sensitivity of the in-pit resource at a series of
copper cutoff thresholds; the base case cutoff of 0.50% copper cutoff is
highlighted. This shallow mineralization is located in the Ruby Creek
Zones in the Upper and Lower Reefs. The key assumptions and methods used
to estimate the mineral resources and determine reasonable prospects
for extraction of the mineral resources included generating a resource
limiting pit shell using a projected metal price of US$3.00 per lb Cu,
open pit mining costs of US$2.00 per tonne, milling costs of US$11.00
per tonne, G&A of US$5.00 per tonne, metallurgical recovery of 87%,
and an average pit slope of 43 degrees. Indicated in-pit resources at
the Bornite deposit at a 0.50% Cu cutoff are 14.1 million tonnes at
1.08% Cu. Inferred in-pit resources at the Bornite deposit at a 0.50% Cu
cutoff are 109.6 million tonnes at 0.94% Cu. Previous in-pit resources
were reported at a 0.5% copper cutoff.
Table 1. Bornite Deposit -- In-Pit Mineral Resource Estimate
Indicated | Inferred | |||||
---|---|---|---|---|---|---|
Cutoff % Cu | Tonnes (millions) | Grade % Cu | Contained Cu (lbs, millions) | Tonnes (millions) | Grade % Cu | Contained Cu (lbs, millions) |
0.35 | 16.8 | 0.97 | 360 | 123.4 | 0.88 | 2,389 |
0.40 | 16.1 | 1.00 | 354 | 119.8 | 0.89 | 2,359 |
0.45 | 15.1 | 1.04 | 345 | 115.4 | 0.91 | 2,319 |
0.50 | 14.1 | 1.08 | 334 | 109.6 | 0.94 | 2,259 |
0.55 | 12.9 | 1.13 | 321 | 102.8 | 0.96 | 2,180 |
0.60 | 11.8 | 1.18 | 307 | 95.2 | 0.99 | 2,086 |
- Base Case cutoff grade of 0.50% Cu is highlighted in table.
- Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resources will be converted into Mineral Reserves. See "Cautionary Note to United States Investors."
- Resources stated as contained within a pit shell developed using a metal price of US$3.00/lb Cu, mining costs of US$2.00/tonne, milling costs of US$11/tonne, G&A cost of US$5.00/tonne, 87% metallurgical recoveries and an average pit slope of 43 degrees.
- Inferred resources have a great amount of uncertainty as to their existence and whether they can be mined legally or economically. It cannot be assumed that all or any part of the Inferred resources will ever be upgraded to a higher category.
In addition to the in-pit resources, Table 2 shows the sensitivity of mineral resource that may be amenable to underground extraction methods. The base case cutoff grade for resources below the pit shell is 1.50% copper. The key assumptions used to estimate the mineral resources and to determine reasonable prospects for economic extraction of the mineral resources are a projected metal price of US$3.00 per pound of copper, underground mining costs of US$50.00 per tonne, milling costs of US$11.00 per tonne, G&A of US$5.00 per tonne, and an average metallurgical recovery of 87%. This mineralization is located in the South Reef Zone and the Ruby Creek Zone in the Lower Reef. Inferred below pit resources at the Bornite deposit are reported (at an elevated 1.5% Cu cutoff) as 55.6 million tonnes at 2.81% Cu. Previous below pit resources at the South reef were reported at a 1% Cu cutoff.
Table 2. Bornite Deposit -- Below Pit Resources
Inferred | |||
---|---|---|---|
Cutoff % Cu | Tonnes (millions) | Grade % Cu | Contained Cu (lbs, millions) |
0.5 | 264.5 | 1.27 | 7,418 |
1.0 | 113.6 | 1.99 | 4,972 |
1.5 | 55.6 | 2.81 | 3,437 |
2.0 | 40.9 | 3.21 | 2,887 |
2.5 | 32.0 | 3.48 | 2,448 |
3.0 | 22.3 | 3.79 | 1,859 |
- Base Case cutoff grade of 1.5% Cu is highlighted in table.
- Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resources will be converted into Mineral Reserves. See "Cautionary Note to United States Investors."
- Inferred resources have a great amount of uncertainty as to their existence and whether they can be mined legally or economically. It cannot be assumed that all or any part of the Inferred resources will ever be upgraded to a higher category.
- The previous Ruby Creek resource was limited within a manually generated pit shell that was restricted to near-surface mineralization. This previously resulted in a much smaller pit shell than that generated by the Lerchs Grossman algorithm which generated a much larger pit resulting in the increase in the in-pit resources.
- The previous resource at South Reef utilized a probability shell based on a 2% copper threshold to define two estimation domains within the Carbonate stratigraphy: inside the 2% Cu probability shell and outside the shell. The current model utilizes an additional probability shell based on a 0.2% Cu threshold to target moderate-grade resources.
- Additional drilling has added significant resources down-dip in both the Ruby Creek and South Reef Zones.
- Additional sampling of previously un-sampled core in Kennecott-era drill holes has added near-surface resources and improved resource continuity in the Ruby Creek area.
- The change in the base case cutoff threshold for below pit resources from 1.0 to 1.5% copper has resulted in a decrease in the amount of resources amenable to underground extraction.
Mineralization at the Ruby Creek zone occurs as two discrete strata bound lenses: a Lower Reef which outcrops and dips approximately 10-15 degrees to the northeast; and an Upper Reef lying roughly 150+ meters above the Lower Reef stratigraphy and which includes a small high-grade zone historically referred to as the "No.1 Orebody" by Kennecott. Mineralization is hosted by a Devonian age carbonate sequence containing broad zones of dolomite alteration and associated sulfide mineralization including bornite, chalcopyrite, and chalcocite occurring as disseminations and vein stockworks as well as crackle and mosaic breccia fillings and locally massive to semi-massive replacement bodies.
The 2013 drilling campaign focused on: 1) expanding shallow potentially open-pit exploitable resources in the Lower Reef area in the Ruby Creek Zone; and 2) extending deeper potentially underground exploitable resource to the north, which was extended in the most recent drilling campaign, in the Lower Reef in both the Ruby Creek and South Reef Zones. Drilling targeting shallow mineralization totaled 4,684 meters in 12 drill holes and deeper drilling targeting underground mineralization totaled 3,458 meters in five drill holes.
In addition to the 2013 drilling, NovaCopper conducted an extensive re-sampling and assay program of 33 historical drill holes totaling 11,067 meters at the Bornite Project. These holes were previously drilled and only selectively sampled by Kennecott within the Ruby Creek Zone of the Bornite deposit. Of the 33 historic drill holes sampled, 26 holes had intervals of copper greater than 0.5% copper, and 29 holes contained mineralization greater than 0.2% copper. The objectives of the re-assay program were twofold: 1) to confirm and conduct a Quality Assurance/Quality Control ("QA/QC") program on the historical sample results; and 2) to identify additional lower-grade (0.2-0.5% copper) shallow material, which was not previously sampled.
In late 2013, NovaCopper contracted BDRC and SGI to update the resource estimates for the Bornite deposit. The geological and assay database have been reviewed and audited by BDRC and SGI. It is of the opinion of BDRC and SGI that the current drilling information is sufficiently reliable to interpret with confidence the boundaries for copper mineralization and that the assay data are sufficiently reliable to support mineral resource estimation. That estimation utilizes two-meter compositing of assays from 216 drill holes completed between 1961 and 2013. Estimated blocks were 5 x 5 x 5 meters on a side.
Seven domains were established for the estimation, all of which were
treated as hard boundaries with no mixing of data between the domains.
The domains include two high-grade carbonate domains inside a 2% copper
probability shell, three moderate-grade carbonate domains inside a 0.2%
copper probability shell, one weakly-mineralized carbonate domain
outside the 0.2% copper probability shell, and one weak-unmineralized
phyllite domain. Visual inspections of the probability shells show that
they fit well with observed levels of bornite, chalcocite and
chalcopyrite mineralization.
Based on the interpreted local high-grade nature of the mineralization,
both capping and outlier restriction strategies were implemented to
control the influence of high-grade mineralization in the resource
model. This methodology removed approximately 5% of the contained copper
in the Ruby Creek Zone and 8% of the contained copper in the South Reef
Zone.
Copper grades are interpolated in model blocks using ordinary kriging
with a minimum of one and a maximum of twenty composited samples and a
maximum of five samples from a single drill hole.
A total of 4,472 specific gravity measurements, of which 40% are within
the mineralized shells, were utilized to estimate densities in the block
model. Specific gravity values were estimated into model blocks using
inverse distance squared moving averages using the domains described
previously.
Resources included in the Indicated category includes blocks in the
model that are within a maximum average distance of 35 meters from three
or more drill holes and exhibit a relatively high degree of confidence
in the grade and continuity of mineralization. Resources in the Inferred
category require a minimum of one drill hole within a maximum distance
of 100 meters and exhibit reasonable confidence in the grade and
continuity of mineralization.
Figure 2 shows a NE-SW cross-section through the block model showing
estimated copper grades in the Ruby Creek area. The extent of the
resource limiting pit shells is represented by the black line. Figure 3
shows an NE-SW cross-section through the block model showing
higher-grade, below pit, resources in the South Reef area.
Figure 2. Bornite Deposit -- NE-SW section thru the Block Model -- Ruby Creek zone
Figure 3. Bornite Deposit -- NE-SW section thru the Block Model -- South Reef zone
Arctic Project
On September 12, 2013 the Company filed, on SEDAR and EDGAR, a National Instrument 43-101 Preliminary Economic Assessment ("PEA") on the Arctic Project, which is located approximately 27 kilometers to the northeast of the Bornite Project. The Arctic deposit has a post-tax net present value of approximately $537.2 million. Table 3 reports mineral resources for the Arctic Project. The PEA is preliminary in nature and includes Inferred mineral resources that are considered too speculative geologically to have the economic characteristics applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the PEA will be realized. Please visit the Company's website at www.novacopper.com for a copy of the PEA.
Table 3 -- Resource estimate for the Arctic Project (NSR cut off of $35/tonne)
Category | Mt | Cu (%) |
Zn (%) |
Pb (%) |
Au (g/t) |
Ag (g/t) |
Cu (Mlb) |
Zn (Mlb) |
Pb (Mlb) |
Au (Moz) |
Ag (Moz) |
---|---|---|---|---|---|---|---|---|---|---|---|
Indicated | 23.8 | 3.26 | 4.45 | 0.76 | 0.71 | 53.2 | 1,713 | 2,338 | 400.9 | 0.55 | 40.8 |
Inferred | 3.4 | 3.22 | 3.84 | 0.58 | 0.59 | 41.5 | 239 | 285 | 43.2 | 0.06 | 4.5 |
- These resource estimates have been prepared in accordance with NI 43-101 and the CIM Definition Standards. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Inferred resources have a great amount of uncertainty as to their existence and whether they can be mined legally or economically. It cannot be assumed that all or any part of the Inferred resources will ever be upgraded to a higher category. See "Cautionary Note to United States Investors."
- Mineral Resources are contained within an Indicated and Inferred pit design using an assumed copper price of $2.90/lb, zinc price of $0.85/lb, lead price of $0.90/lb, silver price of $22.70/oz, and gold price of $1,300/oz.
- Appropriate mining costs, processing costs, metal recoveries and inter ramp pit slope angles were used to generate the pit design.
- Mineral Resources have been estimated using a constant NSR cutoff of $35.01/tonne milled. The $35.01/tonne milled cutoff is calculated based on a process operating cost of $19.03/t, G&A of $7.22/t and Site Services of $8.76/t. NSR equals payable metal values, based on the metal prices outlined in Note 2 above, less applicable treatment, smelting, refining costs, penalties, concentrate transportation costs, insurance and losses and royalties.
- The estimated life of mine strip ratio is 8.39:1.
- Rounding as required by reporting guidelines may result in apparent summation differences between tonnes, grade and contained metal content.
- Tonnage and grade measurements are in metric units. Contained copper, zinc and lead pounds are reported as imperial pounds, contained silver and gold ounces as troy ounces.
Erin Workman, P.Geo. is the Director of Technical Services for NovaCopper Inc. and is a Qualified Person as defined by National Instrument 43-101. Ms. Workman has reviewed the technical information in this news release and approves the disclosure contained herein.
Mr. Bruce Davis, FAusIMM, the president of BD Resource Consulting Inc.,
Mr. Robert Sim, P.Geo., of Sim Geological Inc., and Mr. Jeff Austin,
P.Eng., of International Metallurgical & Environmental Inc., have
also reviewed the technical information related to the Bornite deposit
in this news release and approve the disclosure contained herein as
independent "qualified persons", within the meaning of National
Instrument 43-101, Standards of Disclosure for Mineral Projects (NI
43-101).
Neither Bruce Davis of BD Resource Consulting Inc., Robert Sim of Sim
Geological Inc., nor Jeff Austin of International Metallurgical &
Environmental Inc., nor any associates employed in the preparation of
the Bornite Project resource estimation have any beneficial interest in
NovaCopper. These Consultants are not insiders, associates, or
affiliates of NovaCopper. The information in this press release is not
dependent upon any prior agreements concerning the conclusions to be
reached, nor are there any undisclosed understandings concerning any
future business dealings between NovaCopper and the Consultants. The
Consultants were retained by NovaCopper to prepare the Bornite Project
resource estimate and are to be paid a fee for their work in accordance
with normal professional consulting practices.
About NovaCopper
NovaCopper Inc. is a base metals exploration company focused on
exploring and developing the Ambler mining district in Alaska. It is
one of the richest and most-prospective known copper-dominant districts
located in one of the safest geopolitical jurisdictions in the world. It
hosts world-class polymetallic VMS deposits that contain copper, zinc,
lead, gold and silver, and carbonate replacement deposits which have
been found to host high-grade copper mineralization. Exploration efforts
have been focused on two deposits in the Ambler district -- the Arctic
VMS deposit and the Bornite carbonate replacement deposit. A National
Instrument 43-101-compliant Preliminary Economic Assessment for the
Arctic Deposit, completed in July 2013, identified a polymetallic
open-pit project with the Net Present Value of $930 and $535 million on
the pre-tax and after-tax bases, respectively using an 8% discount rate
and long-term metal prices of $2.90/lb copper, $0.85/lb zinc, $0.90/lb
lead, $22.70/oz silver and $1,300/oz gold. The Preliminary Economic
Assessment is preliminary in nature and includes inferred mineral
resources that are considered too speculative geologically to have the
economic considerations applied to them that would enable them to be
categorized as reserves. There is no certainty the Preliminary Economic
Assessment will be realized. Both deposits are located within
NovaCopper's land package that spans approximately 143,000 hectares.
NovaCopper has an agreement with NANA Regional Corporation, Inc. (NANA),
an Alaskan Native Corporation that provides a framework for the
exploration and potential development of the Ambler mining district in
cooperation with the local communities. Our vision is to develop the
Ambler mining district into a premier North American copper producer.
More information on the Company, its properties and its management team
is available on the Company's website at
www.novacopper.com.
NovaCopper Contact:
Patrick Donnelly
Vice President, Corporate Communications
moc.reppocavon@yllennod.kcirtap
604-638-8088 or 1-855-638-8088
# # #
Cautionary Note Regarding Forward-Looking Statements
This press release includes certain "forward-looking
information" and "forward-looking statements" (collectively
"forward-looking statements") within the meaning of applicable Canadian
and United States securities legislation including the United States
Private Securities Litigation Reform Act of 1995. All statements, other
than statements of historical fact, included herein, without limitation,
statements relating to the future operating or financial performance of
NovaCopper, are 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 statements
regarding perceived merit of properties; exploration results and
budgets; mineral reserves and resource estimates; work programs; capital
expenditures; timelines; strategic plans; market prices for precious
and base metals; or other statements that are not statements of fact.
Forward-looking statements involve various risks and uncertainties.
There can be no assurance that such statements will prove to be
accurate, and actual results and future events could differ materially
from those anticipated in such statements. Important factors that could
cause actual results to differ materially from NovaCopper's expectations
include the uncertainties involving the need for additional financing
to explore and develop properties and availability of financing in the
debt and capital markets; uncertainties involved in the interpretation
of drilling results and geological tests and the estimation of reserves
and resources; the need for cooperation of government agencies and
native groups in the development and operation of properties; the need
to obtain permits and governmental approvals; risks of construction and
mining projects such as accidents, equipment breakdowns, bad weather,
non-compliance with environmental and permit requirements, unanticipated
variation in geological structures, metal grades or recovery rates;
unexpected cost increases, which could include significant increases in
estimated capital and operating costs; fluctuations in metal prices and
currency exchange rates; and other risk and uncertainties disclosed in
NovaCopper's Annual Report on Form 10-K for the year ended November 30,
3013 filed with Canadian securities regulatory authorities and with the
United States Securities and Exchange Commission and in other NovaCopper
reports and documents filed with applicable securities regulatory
authorities from time to time. NovaCopper's forward-looking statements
reflect the beliefs, opinions and projections on the date the statements
are made. NovaCopper assumes no obligation to update the
forward-looking statements or beliefs, opinions, projections, or other
factors, should they change, except as required by law.
Cautionary Note to United States Investors
This press release has been prepared in accordance with the
requirements of the securities laws in effect in Canada, which differ
from the requirements of U.S. securities laws. Unless otherwise
indicated, all resource and reserve estimates included in this press
release have been prepared in accordance with National Instrument 43-101
Standards of Disclosure for Mineral Projects ("NI 43-101") and the
Canadian Institute of Mining, Metallurgy, and Petroleum Definition
Standards on Mineral Resources and Mineral Reserves. NI 43-101 is a rule
developed by the Canadian Securities Administrators which establishes
standards for all public disclosure an issuer makes of scientific and
technical information concerning mineral projects. Canadian standards,
including NI 43-101, differ significantly from the requirements of the
United States Securities and Exchange Commission ("SEC"), and resource
and reserve information contained herein may not be comparable to
similar information disclosed by U.S. companies. In particular, and
without limiting the generality of the foregoing, the term "resource"
does not equate to the term "reserves". Under U.S. standards,
mineralization may not be classified as a "reserve" unless the
determination has been made that the mineralization could be
economically and legally produced or extracted at the time the reserve
determination is made. The SEC's disclosure standards normally do not
permit the inclusion of information concerning "measured mineral
resources", "indicated mineral resources" or "inferred mineral
resources" or other descriptions of the amount of mineralization in
mineral deposits that do not constitute "reserves" by U.S. standards in
documents filed with the SEC. Investors are cautioned not to assume that
any part or all of mineral deposits in these categories will ever be
converted into reserves. U.S. investors should also understand that
"inferred mineral 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 an "inferred
mineral resource" will ever be upgraded to a higher category. Under
Canadian rules, estimated "inferred mineral resources" may not form the
basis of feasibility or pre-feasibility studies except in rare cases.
Investors are cautioned not to assume that all or any part of an
"inferred mineral resource" exists or is economically or legally
mineable. Disclosure of "contained ounces" in a resource is permitted
disclosure under Canadian regulations; however, the SEC normally only
permits issuers to report mineralization that does not constitute
"reserves" by SEC standards as in-place tonnage and grade without
reference to unit measures. The requirements of NI 43-101 for
identification of "reserves" are also not the same as those of the SEC,
and reserves reported by the Company in compliance with NI 43-101 may
not qualify as "reserves" under SEC standards. Accordingly, information
concerning mineral deposits set forth herein may not be comparable with
information made public by companies that report in accordance with U.S.
stan
1 The Arctic copper-equivalent resource is calculated using the
following metals price assumptions: (in USD) $2.90/lb Cu, $1,300/oz Au,
$22.70/oz Ag, $0.85/lb Zn, and $0.90/lb Pb. containing 23.8 million
tonnes (Mt) of Indicated Resource grading approximately 3.26% copper,
4.45% zinc, 0.76% lead, 40.8 g/t silver and 0.55 g/t gold.