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International Tower Hill Mines Announces Pre-Feasibility Study Results on 13.6 Million Ounce Gold Resource

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International Tower Hill Mines Announces Pre-Feasibility Study Results on 13.6 Million Ounce Gold Resource

 

 

 

 

 

Reaffirms Project’s Excellent Leverage To Rising Gold Prices

 

Increased 13.6 Million Ounce Resource Solidifies Standing As Largest
Independent Gold-Only Resource in North America

 

Annual Average Production of 306,200 Ounces per Year Over 21 Year Mine Life

 

Significantly De-Risks Project and Forms Solid Foundation To Advance Project Forward

 

International Tower Hill Mines Ltd. (TSX: ITH) (NYSE-MKT: THM) announced the results of the Pre-Feasibility Study for its Livengood Gold Project located near Fairbanks, Alaska. The PFS details a project that would process 65,000 tons per day and produce 6.4 million ounces of gold over 21 years from a gold resource estimated at 13.6 million ounces at 0.60 g/tonne. The PFS utilized a third-party review by Whittle Consulting and BBA Inc. to integrate new interpretations based on an expanded geological database, improved geological modelling, new resource estimation methodology, an optimized mine plan and production schedule, additional detailed metallurgical work at various gold grades and grind sizes, changes in the target grind for the mill, new engineering estimates, and updated cost inputs, all of which significantly de-risk the Project. The PFS has estimated the capital costs of the Project at US$1.93 billion, the total cost per ton milled at US$13.12, the all-in sustaining costs at US$1,171 per ounce, and an after-tax NPVof US$400 million at $1,800/oz, US$975 million at US$2,000/oz, and US$2.3 billion at $US2,500/oz.

 

“This PFS confirms that the Livengood Gold Project is the one of the largest, highly leveraged gold projects in North America. This study is the culmination of years of work and greatly enhances our understanding of the deposit. We have now thoroughly evaluated, optimized, and de-risked all major elements of the Project and have an excellent foundation on which to build shareholder value. International Tower Hill’s estimated 13.6 million ounces, together with our favorable jurisdiction and proximity to infrastructure, offers our investors great leverage to the gold price,” said Karl Hanneman, CEO.

 

Pre-Feasibility Study Overview

 

The Project configuration evaluated in the PFS is a conventional, owner-operated surface mine that will utilize large-scale mining equipment in a blast/load/haul operation. Mill feed would be processed in a 65,000 tons per day comminution circuit consisting of primary and secondary crushing, wet grinding in a single semi-autogenous (SAG) mill and single ball mill followed by a gravity gold circuit and a conventional carbon in leach (CIL) circuit.

 

Whittle Enterprise Optimization

 

Prior to beginning the PFS, the Company retained Whittle Engineering and BBA Engineering to collaborate on an enterprise optimization study to review various technologies and project configurations and to recommend the optimum configuration for the PFS. The Whittle and BBA Study reviewed secondary crushing with SAG and ball mill, tertiary crushing with ball mill, gravity/CIL at P80 of 90 micron to 250 micron, stand-alone and auxiliary heap leach configurations, gravity only gold recovery, gravity/flotation with pressure oxidation and CIL of flotation concentrate. These configurations were evaluated at various combinations of project ramp up strategy, annual throughput, primary, secondary, and tertiary grind size, as well as mining fleet size and stockpile management strategies. Tailings technologies reviewed included conventional tailings and pressure filtered tailings.

 

The Whittle and BBA Study determined that the gravity/CIL plant at P80 250 micron with conventional tailings provided the highest NPV, which is the configuration detailed in the PFS.

 

Pre-Feasibility Study Summary

 

The PFS was prepared by independent third-party consultants and provides information on the optimized Project with higher throughput, an updated resource estimate, and capital and operating cost estimates as compared to the project evaluated in the National Instrument 43-101 – Standards of Disclosure for Mineral Projects April 2017 Technical Report (the “2017 Report”). The final version of the NI 43-101 technical report containing the PFS will be filed on SEDAR within 45 days. As a result of the changes to the Project as evaluated in the PFS, including differences in the mineral resource estimation methodology and changes to the economic parameters applied to the geologic block model (gold price, recovery, CAPEX, and OPEX), all of which resulted in a change in the mineral resources, the Project as evaluated in the 2017 Report is no longer considered current and the 2017 Report should therefore not be relied upon by investors.

 

The Company cautions that the PFS is preliminary in nature, and is based on technical and economic assumptions which would be further refined and evaluated in a full feasibility study. The PFS is based on an updated Project mineral resource estimate effective as of August 20, 2021 using a different mineral resource model than what was used in the 2017 Report.

 

The following is a summary of the material aspects and assumptions of the PFS. Investors are urged to review the complete NI 43-101 report following its filing on SEDAR for complete details of the PFS.

 

The engineering design to estimate capital costs used in the PFS are within a -20%/+25% accuracy.

 

Project Location

 

The Project is connected by an existing paved highway to the city of Fairbanks, 70 miles to the southwest in central Alaska. The Project is located in an active mining district that has been mined for gold since 1914. The State of Alaska land use plan designates mining as the primary surface land use for the area in which the Project is located.  Employees would be bussed daily to the site from Fairbanks.

 

Infrastructure

 

The Project would include a lined tailings management facility, an administration office/shop/warehouse complex, and would also include construction of a 50-mile 230kV electrical transmission line to the mine site from the existing grid power near Fairbanks, Alaska.

 

Environmental and Community Relations

 

Twelve continuous years of baseline environmental work continues to indicate that all aspects of the Project can be successfully and safely managed. The design of the tailings facility incorporates best practices including a lined rock fill structure with a lined tailings basin. The Project development team has considerable experience working with Alaska’s large mine permitting process and has a proven and respected track record of developing mining projects safely and in an environmentally sound manner. The Project has already and will continue to provide local economic opportunities with local access to a highly skilled and available work force. The Company is also working to seek early input on the Project and to explore ways to maximize economic benefits to the local communities.

 

Summary of Results of the 65,000 Tons Per Day PFS

 

OPERATING METRICS 2021 PFS
Mill Throughput 65,000 tons/day
Head Grade – Year 1-5(1) 0.79 g/tonne
Head Grade – LOM(1) 0.65 g/tonne
Gold Recovery – LOM 71.4 %
Mine Life 21 years
Total Ounces Produced 6,430,178 Troy ounces
Average Annual Production – Year 1-5 388,600 Troy ounces
Average Annual Production – LOM 306,200 Troy ounces
Total Ore Processed 474 Million tons
Total Waste(2) 547 Million tons
Annual Mining Rate 52 Million tons
Waste Rock to Mill Ore (ton) Ratio – LOM during production 0.98:1 Waste to Ore
Waste Rock to Mill Ore (ton) Ratio – LOM 1.15:1 Waste to Ore
Low Grade Stockpile – Total Placed/Maximum Size 105/88 Million tons
(1) Diluted grade
(2) Includes 84 million tons pre-production

 

 

 

FINANCIAL METRICS 2021 PFS        US$                 
CAPEX – Initial 1.93 $Billion
CAPEX – Sustaining 658 $Million
Reclamation & Closure 322 $Million
OPEX – Mining 2.05 $/ton mined
OPEX – Processing 7.72 $/ton ore
OPEX – General &Administrative (G&A) 1.35 $/ton ore
OPEX – Operating Cost – Year 1-5 887 $/Ounce
OPEX – Operating Cost – LOM 1,068 $/Ounce
All-In Sustaining Cost of Production – Year 1-5 1,038 $/Ounce
All-In Sustaining Cost of Production – LOM 1,171 $/Ounce

 

Gold Price Sensitivity Analysis

 

The following table shows the average annual free cash flow and EBIDTA generated by the Project at various gold prices.

 

(US$M) FREE CASH FLOW EBIDTA
Gold Price
($/Oz)
Average Annual
(Year 1-5)
Average Annual
(LOM)
Average Annual
(Year 1-5)
Average Annual
(LOM)
$1,500 $159 $108 $229 $142
$1,680 PFS
Base Case
$225 $154 $296 $197
$1,800 $269 $184 $342 $234
$2,000 $332 $232 $417 $295
$2,500 $482 $349 $605 $449

 

The following table shows the after-tax economics at various gold prices.

 

Gold Price ($/Oz) AFTER TAX
NPV 0% ($M)
AFTER TAX
NPV 5% ($M)
IRR (%) Payback (Years)
$1,500 $202 ($512) 1.00% 16.2
$1,680  (PFS Base
Case)
$1,137 $45 5.30% 10.4
$1,800 $1,741 $400 7.70% 8.2
$2,000 $2,729 $975 11.20% 6.3
$2,500 $5,102 $2,351 18.50% 3.9

 

Capital Costs

Key capital expenditures for initial and sustaining capital requirements are identified in the following table.

 

US$ Million
Description Initial Sustaining
Process Facilities $433
Infrastructure Facilities 459 $514
Power Supply 87
Mine Equipment 200 139
Mine Development 230
Owners Costs 296 5
Contingency 220
Total   $1,925 $658

 

Rounding of some figures may lead to minor discrepancies in totals.

 

All-in Sustaining Costs

 

The table below highlights the all-in sustaining costs and the all-in cost over the life of the Project:

 

 

Year 1-5 LOM
US$/Ounce US$ Million US$/Ounce US$ Million
Operating Costs $887 $1,724 $1,068 $6,870
Sustaining Capital Expenditures 151 292 102 658
All-In Sustaining Costs(1) $1,038 $2,016 $1,171 $7,529
Capital Expenditures (2) (3) 0 0 299 1,925
Funding of Reclamation Trust Fund (4) 30 58 42 268
All-In Costs(1) $1,068 $2,075 $1,512 $9,722
Rounding of some figures may lead to minor discrepancies in totals.
(1)   All-In Sustaining Costs and All-In-Costs are non-IFRS
measures. See reference to “Non-IFRS Measures” below.
(3)   Excludes US$40 million of recoverable initial stores
inventory.
(2)   Includes initial capital expenditures only. (4)   Total US$322 million estimated costs.

 

Annual Gold Production

 

The chart below highlights the anticipated production schedule. Total life-of-mine production is anticipated to be 6,430,178 ounces. Mill feed will consist of reclaimed ore from the low-grade stockpile during Years 18 through 21.

 

Year Mill Feed Grade (g/tonne) Ounces Produced (000)
1 0.76 321
2 0.69 388
3 0.93 482
4 0.93 437
5 0.61 314
6 0.61 328
7 0.64 340
8 0.64 329
9 0.69 357
10 0.58 306
11 0.61 296
12 0.72 336
13 0.77 339
14 0.77 322
15 0.71 308
16 0.73 316
17 0.65 293
18 0.36 188
19 0.36 188
20 0.36 188
21 0.37 54
LOM 0.65 6,430
Rounding of some figures may lead to minor discrepancies in totals.

 

Project Mineral Reserves

 

The table below presents the Mineral Reserve estimate for the Project (effective as of October 22, 2021). These Proven and Probable Mineral Reserves formed the basis of the economic evaluation of the Project and are based on a gold price of US$1,680 per ounce. The economic assumptions and parameters used for the calculation of reserves are the same as those used for the PFS financial model.  Note that tonnages presented are in the metric system.

 

Livengood Gold Project Mineral Reserve Estimate

 

Classification  Tonnes (Mt)  Au (g/tonne)  Contained Au
(000’s) 
Proven 411.5 0.64 8,492
Probable 18.5 0.86 512
Total P & P 430.1 0.65 9,004

 

(1) Mineral Reserves are reported using the 2014 CIM Definition Standards and are estimated in accordance with 2019 CIM Best Practices Guidelines.
(2) Mineral Reserves are estimated using a gold price of  US$1,680 per ounce, and consider a 3% royalty, 1.80/oz for smelting, refining, and transportation costs, and a gold payable of 99.9%
(3) Metallurgical recovery curves were developed for each rock type, with the Mineral Reserves having the following tonnage weighted averages; 83.3%, for Rocktype 4, 79.8% for Rocktype 5, 73.5% for Rocktype 6, 66.4% for Rocktype 7, 58.7% for Rocktype 8 and 57.1% for Rocktype 9, including 22% for massive stibnite mineralization.
(4) As a result of the complex metallurgical recovery equations, it is difficult to determine specific cut-off grades. The following presents the lowest gold grades for each rocktype that are processed in the life of mine plan; 0.26 g/t for Rocktype 4, 0.28 g/t for Rocktype 5, 0.31 g/t for Rocktype 6, 0.31 g/t for Rocktype 7 and 0.42 g/t for Rocktype 8 and 0.42 g/t  for Rocktype 9.
(5) The strip ratio for the open pit is 1.2 to 1.
(6) The Mineral Reserves are inclusive of mining dilution and ore loss.
(7) The reference point for the Mineral Reserves is the primary crusher.
(8) Totals may not add due to rounding.
(9) The foregoing mineral reserves are based upon and are included within the current mineral resource estimate for the Project.

 

Project Mineral Resources

The mineral resource estimates set forth in the PFS have been prepared by Resource Development Associates Inc. Compared to the mineral resource estimates in the 2017 Report,  the 2021 MRE included spatial modelling of the occurrence of antimony throughout the deposit as well as modelling of the locations of massive stibnite veins within the deposit.  These details add valuable contributions to the reasonable prospects of eventual economic extraction of gold for the Project.  Gold mineralization has been interpolated into 10 x 10 x 10-meter blocks using inverse distance cubed (ID3) estimation techniques, believed to more conservatively support future production schedules as compared to the 2017 Report, which was based on Multiple Indicator Kriging of 15 x 15 x 10-meter blocks parceled into 7.5 x 7.5 x 10-meter selective mining units.

 

Table 1 Mineral Resource Estimate – Open Pit Constrained – Economic Parameters at Gold Selling Price of US$1,650 per Troy Ounce.  Resources Estimated at Variable Au Cutoff Grades – as described in Table 2
(Qualified Person: Scott Wilson CPG; Effective August 20, 2021)

 

Classification Tonnes
(Mt)
Au (g/t) Contained
Au

(000’s)
Measured 646.0 0.60 12,482
Indicated 58.5 0.61 1,142
Total M & I 704.5 0.60 13,624
Inferred 16.0 0.40 207

 

Mineral resources for the Project were determined based upon a combination of 776 reverse circulation and diamond drillholes comprising 147,658 assays of which 125,450 assays measured detectable Au mineralization.  High grade Au outliers were capped prior to compositing.  Assays were composited to nominal ten-meter lengths, yielding 20,806 individual samples which were used for the estimation of mineralization.  Mineralization was determined using inverse distance cubed estimation techniques, adhering to geological constraints throughout the mineral deposit.

 

In order to define the quantities of Au with “reasonable prospects for economic extraction” by open pit methods, RDA determined pit constraining limits using the Lerchs-Grossman© economic algorithm which constructs lists of related blocks that should or should not be mined.  The final list defines a surface pit shell that has the highest possible total value, while honoring the required surface mine slope and economic parameters.  Mineral resources were determined at a gold selling price of US$1,650.

 

The parameters listed in Table 2 define a realistic basis to estimate the mineral resources for the Project and are based on the extensive scientific, metallurgical and engineering based analyses that have been completed by Tower Hill Mines since 2006.  Mineral resources for the Project have been limited to mineralized material that occurs within the pit shells and which could be scheduled to be processed based on the defined cut-off grades. All other material within the constraining pit, which was not classified according to CIM Definition Standards, was characterized as non-mineralized material.

 

Table 2 Pit Constraining Parameters

 

Parameter Unit Rock
Type 4
Rock
Type

 5

Rock
Type

 6

Rock
Type

 7

Rock
Type

 8

Rock
Type

 9

Mining Cost
Unprocessed
Rock
US$/tonne 1.76 1.74 1.74 1.68 1.76 1.76
Processing
Cost
US$/
process
tonne
9.27 9.15 9.17 9.50 9.71 9.71
G & A US$/process
tonne
1.55 1.55 1.55 1.55 1.55 1.55
Au Recovery Avg %1 84 80 71 67 55 56
Royalty % 3 3 3 3 3 3
Au Selling
Price
US$/oz 1,650 1,650 1,650 1,650 1,650 1,650
Au Cut-Off g/tonne 0.21 0.20 0.25 0.25 0.33 0.33
Overall Slope
Angle
Degrees 45 45 45 45 45 45

1 Average % Au Recovery includes massive stibnite at 22% recovery

 

Grade and Tonnage Sensitivity to Cutoff Grade

 

Mineral resources at Livengood are sensitive to the selection of the reporting cutoff grade.  To illustrate this sensitivity, the block model quantities and grade estimates within the constraining pit are presented in Table 3 at linear increases in the cutoff grades for measured, indicated and inferred mineral resources at Livengood.  The same results are presented graphically in Figure 1. Mineralization is constrained to the pit using the parameters in Table 2. The numbers presented in Table 3 should not be misconstrued with a mineral resource statement.  The figures are only presented to show the sensitivity of block model estimates to the selection of a cutoff grade. Mineral resources are not mineral reserves and do not have demonstrated economic viability.

 

Table 3 Sensitivity of Mineral Resources to cutoff used.
Effective Date: August 20, 2021.
QP Scott Wilson CPG

 

 

Measured

 

Indicated

 

 

Measured & Indicated

 

Inferred

 

 

Cutoff
Au g/t
Tonnes (000) Grade     Au
g/t
Au
Oz.       (000)
Tonnes (000) Grade      Au
g/t
Au
Oz.       (000)
Tonnes (000) Grade      Au
g/t
Au
Oz.       (000)
Tonnes (000) Grade      Au
g/t
Au
Oz.       (000)
0.2 816,569 0.53 13,914 73,263 0.53 1,248 889,832 0.53 15,162 20,423 0.37 243
0.3 626,843 0.61 12,293 55,069 0.63 1,115 681,912 0.61 13,409 13,359 0.43 185
0.4 464,710 0.71 10,608 37,347 0.76 913 502,057 0.71 11,520 6,017 0.52 101
0.5 332,891 0.81 8,669 25,437 0.91 744 358,328 0.82 9,413 2,142 0.65 45
0.6 234,524 0.92 6,937 17,976 1.06 613 252,500 0.93 7,549 1,079 0.75 26
0.7 164,938 1.03 5,462 13,645 1.19 522 178,583 1.04 5,984 614 0.84 17
0.8 117,098 1.15 4,329 10,648 1.31 448 127,746 1.16 4,778 335 0.92 10
0.9 83,825 1.26 3,396 8,372 1.44 388 92,197 1.28 3,783 180 0.98 6
1.0 61,474 1.38 2,727 6,479 1.58 329 67,953 1.40 3,057 59 1.04 2

 

 

Sensitivity of Mineralization to Gold Price

 

The sensitivity of the Livengood Project mineralization to the gold price was performed at selling prices of US$1,320/oz (- 20%),US $1,650/oz (the 2021 MRE selling price) and US$1,980/oz (+ 20%).  The input technical parameters, defined in Table 2, were used in the analysis.

 

Table 4 Sensitivity of Pit-Constrained Mineralization Inventory at Gold Prices +/- 20% of US$1,650

 

WhittleTM
Pit Gold

Price
Classification Tonnes
(Mt)
Au
(g/t)
Contained
Au (000’s)
US$1,320 Measured 423.84 0.70 9,496.30
Indicated 24.35 0.85 666.13
Total M & I 448.19 0.71 10,162.43
Inferred 2.02 0.11 7.15
US$1,650 Measured 646.00 0.60 12,482.49
Indicated 58.51 0.61 1,141.61
Total M & I 704.51 0.60 13,624.10
Inferred 15.98 0.40 206.98
US$1,980 Measured 845.60 0.54 14,668.81
Indicated 108.98 0.49 1,717.27
Total M & I 954.58 0.53 16,386.08
Inferred 31.97 0.37 377.99

 

The mineral resource estimate for the Project is inclusive of the mineral reserves for the Project.  Mineral resources that are not mineral reserves do not have demonstrated economic viability. Mineral resource estimates do not account for mineability, selectivity, mining loss and dilution. These mineral resource estimates include inferred mineral resources that are normally considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves. There is also no certainty that these inferred mineral resources will be converted to measured and indicated categories through further drilling, or into mineral reserves, once economic considerations are applied.

 

Metallurgy Recovery by Rock Type

 

The Company has completed extensive metallurgical test work on the rock types that comprise the current estimated mineral resource. Recovery rates by rock type using gravity and carbon-in-leach recovery of gravity tail are shown in the table below:

 

Rock Type Gold Recovery %1
RT4 Cambrian 83.3
RT5 Sunshine Upper Sediments 79.8
RT6 Upper Sediments 73.5
RT7 Lower Sediments 66.4
RT8 Volcanics-Sunshine Zone 58.7
RT9 Volcanics-Core Zone 57.1

 

1- Weighted average recovery within reserve pit at p80 250 micron based on Au grade/geologic domain/Sb concentration/massive stibnite occurrence.

 

Detailed Report

 

A NI 43-101 compliant technical report that summarizes the results of the PFS will be filed on SEDAR at www.sedar.com within 45 days of this news release and will be available on the Company’s website www.ithmines.com at that time.

 

Qualified Persons

 

The PFS was prepared by the following Qualified Persons (as defined under NI 43-101), each of whom is independent of the Company under NI 43-101, and each of whom has reviewed, verified, and approved the scientific and technical data for which they have responsibility contained in this news release pertaining to the PFS. No limitations were imposed on the verification process.

 

 

Qualified Person Company Scope of Responsibility
Colin Hardie, P. Eng (Ontario APEO No.
90512500)
BBA Inc. Financial model, Process
Plant and Infrastructure
CAPEX, G&A OPEX,
Environmental Studies
and Permitting, Overall
NI 43-101 Integration
Jeffrey Cassoff, P. Eng. (Quebec OIQ No.
5002252)
BBA Inc. Mineral Reserves
Mélanie Turgeon, Eng. (Quebec OIQ No.
5028478)
BBA Inc. Process Engineering and
Process Plant OPEX,
Mineral Processing and
Metallurgical Testing
Ryan T. Baker. (Nevada No. 11172) NewFields Companies, LLC Geotechnical Engineering,
Waste Rock and Water
Management, TMF
CAPEX
Mike Levy, P.E. (Colorado No. 40268) JDS Energy and Mining Inc. Mine Slope Stability
Scott Wilson, CPG #10965 Resource Development
Associates Inc.
Geology, Drilling,
Resource Estimation

 

Mr. Colin Hardie is a Senior Process Engineer and the Director of Non-Ferrous Metal Markets at BBA. He joined the BBA team in 2008 and has over 20 years of experience as an operations metallurgist, engineering consultant and in process research and development. He is a graduate of the University of Toronto with a Bachelor of Applied Science degree in Geological and Mineral Engineering (1996). Mr. Hardie also has a Master of Engineering degree in Metallurgy from McGill University (1999) as well as a Master Degree in Business Administration from HEC Montreal (2008). He is a registered Professional Engineer in the Province of Ontario, Canada. He has acted as a Qualified Person and lead study integrator for numerous North American gold, base metal and industrial mineral projects.

 

Mr. Jeffrey Cassoff is a Senior Mining Engineer and the Team Leader for Mining Engineering at BBA. Mr. Cassoff has over 20 years of experience in the mining industry working for both mining operations and as a consultant. Mr. Cassoff is a graduate of McGill University with a Bachelor of Mining Engineering (1999).  Mr. Cassoff is a registered Professional Engineer in the province of Quebec, Canada. He has acted as a Qualified Person for numerous gold projects.

 

Mrs. Mélanie Turgeon is a Process Engineer at BBA and has worked in consulting engineering since 2013. She is a graduate of the Université de Sherbrooke with a Bachelor of Chemical Engineering (2011) and a registered Engineer in the province of Quebec, Canada. She has been involved in the development of metallurgical testwork campaigns and in the writing of technical reports in accordance with standards governing NI 43-101.

 

Mr. Ryan T. Baker is a Principal Engineer with NewFields Mining Design & Technical Services, LLC, located in Lone Tree, CO. He is a graduate of Colorado State University with a Bachelor of Science degree in Civil Engineering (1993) and a registered Professional Engineer in Nevada (#13947), Alaska (#11172), Idaho (#10226), Colorado (#36988), Missouri (PE2008000049), and New Mexico (#22110). He is also a Registered Member of the Society for Mining, Metallurgy, and Exploration (SME, #4204584) and the American Society of Civil Engineers (ASCE, #307827) with relevant experience pertaining to heap leach, tailings and mine overburden storage facilities, and mine surface infrastructure design and inspection since 1994.

 

Mr. Michael Levy is Geotechnical Manager with JDS Energy & Mining Inc. in Denver, CO. He is a graduate of the University of Iowa with a Bachelor of Science degree in Geology and a Master of Science degree in Civil-Geotechnical Engineering. He is a registered Professional Engineer with the states of Colorado (#40268) and a current member of the International Society for Rock Mechanics (ISRM) and the American Society of Civil Engineers (ASCE). Mike has practiced for 22 years and has undertaken numerous mining and civil geotechnical projects ranging from conceptual through feasibility design levels, mine construction and operations support. He is skilled in both soil and rock mechanics engineering and specializes in the design and management of underground and open pit mine excavations.

 

Mr. Scott E. Wilson, CPG (10965), Registered Member of SME (4025107) and President of Resource Development Associates Inc., is an independent consulting geologist specializing in mineral reserve and resource calculation reporting, mining project analysis and due diligence evaluations. He is acting as the Qualified Person, as defined in NI 43-101, and is an author of the technical report which will be filed by the Company for the mineral resource estimate and has reviewed and approved the mineral resource estimate and the PFS summarized in this news release. Mr. Wilson has over 32 years of experience in surface mining, resource estimation and strategic mine planning. Mr. Wilson is independent of the Company under NI 43-101.

 

 


Figure 1 Sensitivity of Mineral Resources to cutoff used. Effective Date: August 20, 2021. QP Scott Wilson CPG (CNW Group/International Tower Hill Mines Ltd.)

 

Posted November 5, 2021

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