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Seabridge Gold Achieves Further Expansion of Deep Kerr Resource Inferred Resource Estimate Totals 19 Million Ounces Gold, 17.3 Billion Pounds Copper 2016 Drill Program Adds 400 Meters of Strike to Conceptual Underground Mine Plan

Resource Estimates

Seabridge Gold Achieves Further Expansion of Deep Kerr

Resource

Inferred Resource Estimate Totals 19 Million Ounces Gold, 17.3 Billion Pounds Copper 

2016 Drill Program Adds 400 Meters of Strike to Conceptual Underground Mine Plan

TORONTO, Feb. 16, 2017 (GLOBE NEWSWIRE) -- Seabridge Gold Inc. announced today an updated

independent mineral resource estimate for the Deep Kerr Deposit at its 100% -owned KSM Project in

northwestern British Columbia, Canada.  The new inferred resource now totals 1.92 billion tonnes grading

0.41% copper and 0.31 g/T gold (containing 19.0 million ounces of gold and 17.3 billion pounds of copper)

constrained by conceptual block cave shapes.

The updated resource estimate represents an increase of 3.0 million ounces of gold and 2.1 billion pounds

of copper over last year ’s inferred resource estimate which was incorporated into the updated National

Instrument 43-101 Technical Report on KSM announced on September 19, 2016.

Seabridge Chairman and CEO Rudi Fronk noted that “the resource additions at Deep Kerr fall within a

conceptual mine plan that supports cost -effective block -cave underground mining methods. The estimate

has been constrained by this mining method. As the deposit grows year by year, it provides us with further

opportunities for economic optimization including increased production rates and higher cut -off grades if we

need them. You can see the upward trend of projected economics in the new Technical Report we released

last year. The Technical Report contains a Preliminary Economic Assessment incorporating the inferred

Deep Kerr resource into the KSM project and the positive economic impact is striking. This year ’s resource

additions likely mean further enhancements to the project ’s economics,” Fronk said.

“The 3.0 million ounce increase in inferred gold resources is once again accretive in terms of ounces of

gold per share, as these new ounces more than offset the one million shares issued in two financings

completed in 2016. Growing ounces of gold per share remains an important objective in Seabridge ’s

corporate strategy, ” Fronk added.

Gold, copper, silver and molybdenum grades in the resource were estimated by Resource Modeling Inc.

(“RMI”) using inverse distance weighting methods and gold and copper grade domains that were designed

within modeled structural and lithologic controls of mineralization for the Deep Kerr zone. Trend plane

search strategies were defined for four distinct structural domains defining strike and dip projections for

sample data. Copper and gold domains were comparable to those used in the resource model completed in

March of 2016 that was also prepared by RMI. Drilling during the 2016 campaign corroborated the major

controls identified in past drilling with respect to copper and gold distribution and the predictability of the

resource model.

The grade models were validated visually and by comparisons with nearest neighbor models. The drill hole

database that was used for the estimate of the Deep Kerr mineral resources consisted primarily of data

collected by Seabridge from 77 core drill holes totaling more than 74,000 meters of core drilling completed

between 2009 and 2016. RMI reviewed the quality assurance/quality control protocols and results

associated with the Seabridge drilling and has concluded that the number and type of gold and copper

standard reference materials (standards, blanks, and duplicates) were reasonable. Based on the

performance of those standard reference materials, RMI believes that the Seabridge drill samples are

reproducible and suitable for estimating mineral resources. Historical drill hole results were used in

conjunction with the 77 Seabridge core holes to estimate block grades for the upper portion of the Deep

Kerr resource.    

Block net smelter return values ( “NSR” values) were calculated by Moose Mountain Technical Services

using metal recovery projection formulae developed by TetraTech from metallurgical test work. This NSR

value, stated in terms of Canadian dollars, reflects metal prices, a US/Cdn currency exchange rate of 0.80,

and offsite transportation, smelting, and refining charges.

Deep Kerr was treated as a potential block cave (bulk underground) mining target. The lateral and vertical

continuity of the zone provides a geometric configuration that is likely to be amenable to these mining

methods. Seabridge has retained Golder Associates, a leading industry expert in underground mining, to

undertake bulk underground mining studies for Deep Kerr. Golder used the block model prepared by RMI

to establish three separate draw point elevations at an NSR shutoff value of Cdn$16, and the conceptual

cave footprints of these three elevations were extruded upward 495 meters. Resources within the extruded

shapes were tabulated for each of the three hypothetical draw point elevations using an NSR cut -off value

of Cdn$16, consistent with last year ’s resource statement in the Technical Report. Evaluation of the

economic potential of Deep Kerr was based on metal prices of US$3.00 per pound of copper, US$1300 per

ounce of gold, US$20 per ounce of silver, US$9.70 per pound of molybdenum together with estimated

metal recoveries from metallurgical test work. These metal prices are generally in line with, or lower than,

the metal prices used by major mining companies for their current resource disclosure for similar types of

projects.

A comparison of the previous Deep Kerr inferred resource estimate to the updated resource estimate is as

follows:

Deep Kerr Undiluted Block Cave Inferred Mineral Resources at C$16 NSR Cutoff

Resource estimates included herein were prepared by RMI under the direction of Michael Lechner, who is

independent of Seabridge and a Qualified Person as defined by National Instrument 43 -101. Mr. Lechner is

a highly-regarded expert in his field and frequently undertakes independent resource estimates for major

mining companies. Mr. Lechner has reviewed and approved this news release.

Exploration activities by Seabridge at the KSM Project have been conducted under the supervision of

William E. Threlkeld, Registered Professional Geologist, Senior Vice President of the Company and a

Qualified Person as defined by National Instrument 43 -101. An ongoing and rigorous quality control/quality

assurance protocol was employed during the 2016 program including the submission of blank and certified

reference standards, in addition all copper assays that exceeded 0.25% Cu were re -analyzed using ore

grade analytical techniques. Cross -check analyses are conducted at a second external laboratory on at

Date of Estimate

Tonnes

(millions)

Average Grades Contained Metal

Gold

(gpt)

Copper

(%)

Silver

(gpt)

Moly

(ppm)

Gold

(000

ounces)

Copper

(million

pounds)

Silver

(000

ounces)

Moly

(M

pounds)

May 31, 2016 1,609 0.31 0.43 1.8 25 16,036 15,249 93,115 89

February 13, 2017 1,921 0.31 0.41 2.1 24 19,050 17,301 130,853 102

Note: Mineral Resources which are not Mineral Reserves do not have demonstrated economic viability. It is reasonably

expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued

exploration.

least 10% of the samples. Samples were assayed at ALS Chemex Laboratory, Vancouver, B.C., using fire

assay atomic adsorption methods for gold and total digestion ICP methods for other elements.

Seabridge holds a 100% interest in several North American gold projects. The Company ’s principal assets

are the KSM Project located near Stewart, British Columbia, Canada and the Courageous Lake gold project

located in Canada ’s Northwest Territories. For a full breakdown of Seabridge ’s mineral reserves and

mineral resources by category please visit the Company ’s website at

http://www.seabridgegold.net/resources.php .

All reserve and resource estimates reported by the Corporation were calculated in accordance

with the Canadian National Instrument 43 -101 and the Canadian Institute of Mining and

Metallurgy Classification system. These standards differ significantly from the requirements of

the U.S. Securities and Exchange Commission. Mineral resources which are not mineral

reserves do not have demonstrated economic viability.

This document contains "forward -looking information" within the meaning of Canadian

securities legislation and "forward -looking statements" within the meaning of the United States

Private Securities Litigation Reform Act of 1995. This information and these statements, referred

to herein as "forward -looking statements" are made as of the date of this document. Forward -

looking statements relate to future events or future performance and reflect current estimates,

predictions, expectations or beliefs regarding future events and include, but are not limited to,

statements with respect to: (i) the estimated amount and grade of mineral resources; (ii) the

growth of the deposit providing the Company with further opportunities for economic

optimization, including increased production rates and higher cut -off grades ; (iii) the shape of

the deposit supporting the most cost -effective underground mining methodologies; (iv) the

resource additions likely meaning further enhancements to the project ’s economics ;  (v) the

lateral and vertical continuity of the deposit providing a geometric configuration that is likely to

be amenable to block cave mining methods ;  (vi) the number and type of gold and copper

standard reference materials (standards, blanks, and duplicates) being reasonable and the

Seabridge drill samples being reproducible and suitable for estimating mineral resources. Any

statements that express or involve discussions with respect to predictions, expectations,

beliefs, plans, projections, objectives or future events or performance (often, but not always,

using words or phrases such as "expects", "anticipates", "plans", "projects", "estimates",

"envisages", "assumes", "intends", "strategy", "goals", "objectives" or variations thereof or

stating that certain actions, events or results "may", "could", "would", "might" or "will" be

taken, occur or be achieved, or the negative of any of these terms and similar expressions) are

not statements of historical fact and may be forward -looking statements.

All forward -looking statements are based on Seabridge's or its consultants' current beliefs as

well as various assumptions made by them and information currently available to them. The

principle assumptions are listed above, but others include: (i) the presence of and continuity of

metals at the Project at modeled grades; (ii) the capacities of various machinery and equipment

and the geotechnical characteristics of the resource material; (iii) the availability of personnel,

machinery and equipment at estimated prices; (iv) exchange rates; (v) metals sales prices; (vi)

appropriate discount rates; (vii) tax rates and royalty rates applicable to the proposed mining

operation; (viii) financing structure and costs; (ix) anticipated mining losses and dilution; (x)

metallurgical performance; (xi) reasonable contingency requirements; (xii) success in realizing

proposed operations; (xiii) receipt of regulatory approvals on acceptable terms, including the

necessary right of way for the proposed tunnels; and (xiv) the negotiation of satisfactory terms

with impacted First Nations groups. Although management considers these assumptions to be

reasonable based on information currently available to it, they may prove to be incorrect. Many

forward -looking statements are made assuming the correctness of other forward looking

statements, such as statements of net present value and internal rates of return, which are

based on most of the other forward -looking statements and assumptions herein. The cost

information is also prepared using current values, but the time for incurring the costs will be in

the future and it is assumed costs will remain stable over the relevant period.

By their very nature, forward -looking statements involve inherent risks and uncertainties, both

general and specific, and risks exist that estimates, forecasts, projections and other forward -

looking statements will not be achieved or that assumptions do not reflect future experience.

We caution readers not to place undue reliance on these forward -looking statements as a

number of important factors could cause the actual outcomes to differ materially from the

beliefs, plans, objectives, expectations, anticipations, estimates assumptions and intentions

expressed in such forward -looking statements. These risk factors may be generally stated as

the risk that the assumptions and estimates expressed above do not occur, but specifically

include, without limitation: risks relating to variations in the mineral content or geotechnical

characteristics within the material identified as mineral reserves or mineral resources from that

predicted; variations in rates of recovery and extraction; developments in world metals

markets; risks relating to fluctuations in the Canadian dollar relative to the US dollar; increases

in the estimated capital and operating costs or unanticipated costs; difficulties attracting the

necessary work force; increases in financing costs or adverse changes to the terms of available

financing, if any; tax rates or royalties being greater than assumed; changes in development or

mining plans due to changes in logistical, technical or other factors; changes in project

parameters as plans continue to be refined; risks relating to receipt of regulatory approvals or

settlement of an agreement with impacted First Nations groups; the effects of competition in the

markets in which Seabridge operates; operational and infrastructure risks and the additional

risks described in Seabridge's Annual Information Form filed with SEDAR in Canada (available at

www.sedar.com ) for the year ended December 31, 2015 and in the Corporation's Annual Report

Form 40 -F filed with the U.S. Securities and Exchange Commission on EDGAR (available at

www.sec.gov/edgar.shtml ). Seabridge cautions that the foregoing list of factors that may affect

future results is not exhaustive.

When relying on our forward -looking statements to make decisions with respect to Seabridge,

investors and others should carefully consider the foregoing factors and other uncertainties

and potential events. Seabridge does not undertake to update any forward -looking statement,

whether written or oral, that may be made from time to time by Seabridge or on our behalf,

except as required by law.

ON BEHALF OF THE BOARD 

"Rudi Fronk"  

Chairman and C.E.O.

For further information, please contact:

Rudi P. Fronk, Chairman and C.E.O.

Tel: (416) 367 -9292 · Fax: (416) 367 -2711

Email: [email protected]