Gcm Mining Announces Updated Mineral Resource Estimate and Positive Preliminary Economic Assessment FOR Its Toroparu Project IN Guyana
401 BAY STREET, SUITE 2400, PO BOX 15, TORONTO, ONTARIO M5H 2Y4 CANADA
PHONE: 416-360-4653; FAX: 416-603-4653
NEWS RELEASE
GCM MINING ANNOUNCES UPDATED MINERAL RESOURCE ESTIMATE AND POSITIVE
PRELIMINARY ECONOMIC ASSESSMENT FOR ITS TOROPARU PROJECT IN GUYANA
• Updated Mineral Resource Estimate of 8.4 Mozs Measured and Indicated Gold Resource at 1.42
g/t and 396 Mlbs Measured and Indicated Copper Resource at 0.1% in 185 million tonnes of rock
• Preliminary Economic Assessment estimates:
o 280,000 ozs of gold production in the first year of operation in 2024;
o 5.4 Mozs of gold, 2.5 Mozs of silver and 141.3 Mlbs of copper produced over a 24-year
mine life;
o US$8.0 billion total revenue, US$3.5 billion operating margin and US$1.7 billion after-tax
Free Cash Flow at a US$1,500/oz gold price; and,
o After-tax net present value (5%) of US$794 million with an after-tax IRR of 46% and two-
year payback.
• Initial US$355 Million capex to construct the Toroparu Project is fully funded.
TORONTO, CANADA, Wednesday, December 1, 202 1 – GCM Mining Corp. (the “ Company”) (TSX:
GCM, OTCQX: TPRFF) announced today that it has completed an updated Mineral Resource estimate for
its Toroparu Project in Guyana with an effective date of November 1, 2021 and in accordance with the
Canadian Institute of Mining Metallurgy and Petroleum (“CIM”) Definition Standards incorpora ted by
reference in National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). GCM
Mining also announced today that Nordmin Engineering Ltd. (“Nordmin”) and SRK Consulting (U.S.), Inc.
(“SRK”) have completed preliminary results of a Preliminary Economic Assessment (“PEA”) for the
Toroparu Project effective November 26, 2021 and is currently finalizing the technical report to be prepared
in accordance with NI 43-101 and filed on SEDAR and the Company’s website in mid-January 2022.
Highlights of the PEA for the Toroparu Project
• The PEA affirms the economic viability of the open pit and underground mining operations at the
Toroparu Project.
• Total life-of-mine (“LoM”) gold production of 5.4 million ounces (“Mozs”) representing 88.4% of the 6.2
Mozs of gold fed to the milling circuit at an average grade of 1.78 g/t Au over the 24-year mine life.
• Open pit mine operations will deliver 93 Mt of potential mill feed (“PMF”) over the LoM and
underground mining operations, which commence in year 10, will deliver an additional 14 Mt of PMF.
• Average annual gold production of 225 ,000 ounces over the 24-year mine life. During the first two -
year payback period, gold production averages 254,000 ounces per year and over the first 9 years of
surface-only mining, gold production averages 202,000 ounces per year. With the commencement of
underground mining in year 10, annual g old production from open pit and underground increases to
an average of 239,000 ounces over the remaining 15 years of the LoM.
• Initial capital co st, to be incurred from 2021 through 2023 , totals US$355 million, of which US$138
million will be funded by deposits under a Precious Metals Purchase Agreement (“PMPA” ) with
Wheaton Precious Metals International Ltd. (“WPMI”) and the balance by the net pro ceeds of the
Senior Notes financing closed in August of this year.
• Processing capacity will be built in two phases with an initial Phase I nominal capacity of 7,000 tpd
(2.55 Mtpa) in a gold leach plant based on gravity and carbon-in-leach circuits (“CIL”) and increasing
in year 6 to 14,000 tpd (5.1 Mtpa) in Phase II with the construction of a copper concentrator based on
gravity and copper flotation circuits. The copper concentrator will facilitate the recovery of 141.3 million
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pounds (“Mlbs”) of copper over its 19 years of operation.
• The PEA delivers solid financial results with LoM total revenue of US$8.0 billion, US $3.5 billion of
operating margin and US$1.7 billion of after-tax Free Cash Flow. The LoM PEA financial results are
based on long-term prices of US$1,500/oz gold, US$20.22/oz silver and US$3.13/lb copper.
• Gold and copper account for approximately 94% and 5.5%, respectively, of total revenue over the
LoM.
• LoM cash cost of US$742/oz and LoM all-in sustaining cost (“AISC”) of US$916/oz.
• The PEA estimates a US$794 million after-tax NPV 5% (net present value at a 5% discount rate), a
46% IRR (after-tax Internal Rate of Return) and a two-year after-tax payback of the initial capital cost
of the Project.
Lombardo Paredes, Chief Executive Officer of GCM Mining, commented “The PEA was initiated as a result
of a significantly expanded Mineral Resource developed from the discovery of the structural control of high-
grade gold mineralization at Toroparu as reported in our July 6, 2021 press release. Compared with Gold
X Mining’s previous Mineral Resource estimate (September 2018), total Measured and Indicated Gold
Resources have increased by approximately 15% to 8.4 million ounces of gold and reflect an increase in
the average head grade from 0.91 g/t to 1.42 g/t in the latest update. The updated mineral resource
estimate reported herein, which represent s a potential step change to the economic value of Toroparu,
underlies the scoping of a long mine life project within the PEA recov ering 280,000 ounces of gold in the
first year of operation in 2024 and an estimated 225,000 ounces of gold per year from both surface and
underground mining operations over 24 years. A total of 5.4 million ounces of gold is expected to be
produced over the LoM in the PEA, an approximately 20% increase from the previous PEA prepared by
Gold X Mining in July 2019. We have already commenced pre -construction activities at the Toroparu
Project site. We have hired Haukes Construction (Guyana) Ltd., a division of Haukes NV of Suriname, for
construction of the preliminary earthworks at Toroparu, with development of the permanent man -camp,
airstrip and rock quarries currently underway. Preparations are also being made for the rehabilitation of the
historical access road commencing early next year. B ased on the technical and financial merits
demonstrated by the PEA and funded by the US$300 million Senior Notes financing we closed in August
and the Wheaton stream, we are proceeding with construction of the Toroparu Project, which is initially
focused on the surface mining of higher-grade gold processed through a 7,000 tonnes per day (“tpd”) gold
leach mill. The PEA envisions an expansion of milling capacity to 14,000 tpd with the addition of a copper
concentrator in year 6 and the addition of underground mining operations in year 10 of the mine life.
Importantly, the Toroparu Deposit is open both along strike and at depth with the additional mineralization
potential below the 450 m level amenable to und erground mining methods. We believe the Toroparu
Project has the potential to be a multi -generational gold mine which can create significant value for our
shareholders, solidifying its position along with our Segovia Operations as a cornerstone asset in GC M
Mining.”
Mineral Resource Estimate (“MRE”) Update Effective November 1, 2021
The MRE, which is summarized in Tables 1 and 2 below, was prepared by Nordmin following a two-phase
diamond drill program carried out by Gold X Mining in 2020-2021 which comprised a total of 20,750 meters
in 114 drill holes . The updated MRE includes an open pit and a maiden underground resource estimate
within the Toroparu Main & NW and SE deposits that are defined by multiple discreet northwest and east-
west oriented high grade mineralized structures that intersect in a repeatable pattern over an estimated
four kilometers of strike, 400-450 m in width, and 450-500 m in depth. The satellite deposits consist of the
Southeast zone (SE) and the Sona Hill satellite gold deposits.
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Table 1: Mineral Resource Statement for the Toroparu Gold Project
Deposit Area Type
Resource
Category Tonnes
Au
(g/t) Au (oz)
Cu
(%) Cu (lb)
Ag
(g/t) Ag (oz)
Toroparu Main & NW Open Pit Measured 98,070,291 1.21 3,809,178 0.110 238,111,611 1.19 3,742,659
Toroparu Main & NW Open Pit Indicated 62,531,387 1.56 3,132,509 0.100 137,556,947 0.91 1,828,430
Toroparu Southeast Open Pit Measured 5,121,448 1.16 190,285 0.043 4,825,694 - -
Toroparu Southeast Open Pit Indicated 2,403,013 1.14 88,391 0.052 2,762,872 - -
Sona Hill Sona Hill Open Pit Measured 6,958,156 1.85 413,224 0.008 1,241,377 1.07 238,790
Sona Hill Sona Hill Open Pit Indicated 4,179,989 1.66 223,062 0.008 699,784 0.85 114,530
Toroparu
Main & NW
& SE Underground Measured 727,497 2.84 66,476 0.072 1,150,934 0.47 11,100
Toroparu
Main & NW
& SE Underground Indicated 4,977,604 3.21 513,914 0.091 9,937,252 0.41 66,013
Subtotal: Measured 110,877,392 1.26 4,479,163 0.100 245,329,616 1.12 3,992,550
Subtotal: Indicated 74,091,993 1.66 3,957,875 0.092 150,956,854 0.84 2,008,972
Subtotal: Measured & Indicated 184,969,385 1.42 8,437,039 0.097 396,286,470 1.01 6,001,522
Toroparu Main & NW Open Pit Inferred 4,018,483 1.58 203,693 0.080 7,117,507 0.66 84,986
Toroparu Southeast Open Pit Inferred 9,411 1.67 505 0.040 8,348 - -
Sona Hill Sona Hill Open Pit Inferred 1,365,019 1.28 56,275 0.006 178,861 0.54 23,789
Toroparu
Main & NW
& SE Underground Inferred 8,402,611 3.53 952,845 0.091 16,884,424 0.25 68,259
Subtotal: Inferred 13,795,524 2.74 1,213,317 0.080 24,189,139 0.40 177,035
Total 198,764,909 1.51 9,650,356 0.006 27,972,610 0.97 6,178,557
Table 2: Mineral Resource Estimate Summary
Tonnes Au (g/t) Au (oz) Cu (%) Cu (lb) Ag (g/t) Ag (oz)
Open Pit
Measured and
Indicated
179,264,284 1.36 7,856,649 0.097 385,198,283 1.03 5,924,409
Inferred 5,392,913 1.50 260,473 0.061 7,304,715 0.63 108,776
Underground
Measured and
Indicated
5,705,101 3.16 580,390 0.088 11,088,186 0.42 77,113
Inferred 8,402,611 3.53 952,845 0.091 16,884,424 0.25 68,259
Total
Measured and
Indicated
184,969,385 1.42 8,437,039 0.097 396,286,470 1.01 6,001,522
Inferred 13,795,524 2.74 1,213,317 0.080 24,189,139 0.40 177,035
Combined Open Pit and Underground Mineral Resources; the Open Pit Mineral Resource is based on a 0.40 g/t gold cut-off grade, and the Underground
Mineral Resource is based on 1.80 g/t gold cut-off grade.
Mineral Resource Estimate Notes
1. Combined Open Pit and Underground Mineral Resources were prepared in accordance with NI 43 -101 and the CIM Definition Standards for
Mineral Resources and Mineral Reserves (2014) and the CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines
(2019). Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. This estimate of Mineral Resources
may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.
2. Underground and Open Pit Mineral Resources are based on a gold price of US$1,630/oz. This gold price is the three-year trailing average as
of September 30, 2021.
3. Open Pit Mineral Resources comprise the material contained within various Lerchs -Grossmann pit shells at various revenue factors. These
revenue factors are as follows: Main/Southeast/NW Zone @ 0.75 revenue factor and Sona Hill @ 1.00 revenue factor. The gold cut-off applied
to Open Pit Mineral Resources within the selected pit shells was 0.40 g/t.
4. Underground Mineral Resources comprise all material found within Mineable Shape Optimizer (“MSO”) wireframes generated at a c ut-off of
1.80 g/t gold including material below cut-off.
5. Ag values are not reported for the Southeast Open Pit Ag con tained metal values reported will not equal A tonnes X grade conversion
calculation.
6. Assays were variably capped on a wireframe-by-wireframe basis.
7. Specific gravity was applied using weighted averages to each individual litho type.
8. Mineral Resource effective date November 1, 2021.
9. All figures are rounded to reflect the relative accuracy of the estimates and totals may not add correctly.
10. Excludes unclassified mineralization located within mined out areas.
11. Reported from within a mineralization envelope accounting for mineral continuity.
The Mineral Resource Statement presented in Table s 1 and 2, was prepared by Independent Qualified
Person (“QP”), Glen Kuntz, P. Geo. of Nordmin with the head office located in Thunder Bay, Ontario. The
MRE is based on validated results of 528 surface drill holes totaling 178,491 m of diamond drilling for the
Toroparu Deposit, representing a 19.7% increase over the previous MRE conducted in 2018, and 181
surface drill holes totaling 20,850 m for the Sona Hill Dep osit that was completed between January 2006
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and the effective date of November 1, 2021. The Mineral Resource Statement includes 72 surface drill
holes totaling 10,166 m of diamond drilling conducted by Gold X Mining in the fourth quarter of 2020
together with an additional 73,439 gold (“Au”) assays, 70,628 copper (“Cu”) assays, and 35,054 silver (“Ag”)
assays that were not included in the previous Mineral Resource update completed in 2018.
The MRE, which is effective from November 1, 2021, supersedes all previous MREs and Technical Reports
filed by Gold X Mining Ltd . and Sand spring Resources Ltd. The MRE was optimized from previous
estimates which defined resources contained in a lower grade bulk tonnage geologic model. The updated
understanding of the geologic structural control over gold mineralization defines a lower volume, higher -
grade core resource that can be mined using both open pit and underground mining methods. Further, the
Phase 2 drill results indicate the scale of the mineralization that remains open to the northwest and at depth
below 450-500 metres.
Toroparu PEA and LoM Plan
A mining study and schedule was prepared by the technical professionals at SRK and Nordmin to create a
LoM production schedule for the Toroparu Project t hat will initially comprise open pit mine operations and
ultimately expand in year 10 to include underground mine operations. Sustaining capital expenditures
related to the development of the underground mining areas will commence in year 9 (2032).
The PEA also envisions a two-phase investment in processing facilities with an initial 7,000 tpd (2.55 Mtpa)
Phase I nominal capacity in a gold leach plant based on gravity and CIL. Construction of a copper
concentrator in years 4 and 5 (2027 -2028) at a capital cost of approximately US$103 million (included in
sustaining capital expenditures and AISC data) will increase Phase II nominal capacity to 14,000 tpd (5.1
Mtpa) by Year 6 (2029) of the LoM. The copper concentrator will be based on gravity and copper flotation
circuits and will facilitate the recovery of 141.3 Mlbs of copper over its 19 years of operation.
The PEA LoM production schedule foresees a total of 107.3 million tonnes of mineralized material being
processed over a 24-year mine life resulting in a total of 5.4 million ounces of gold produced at an average
LoM total cash cost of US$ 742 per ounce and an average LoM AISC of US$ 916 per ounce. The initial
capital cost, to be incurred between 202 1 and 2023, is estimated to total US$35 5 million. At an expected
long-term gold price of US$1,500 per ounce, total LoM undiscounted after-tax project cash flow from mining
operations amounts to US$ 1.7 billion. At a 5% discount ra te, the net present value of the total LoM after -
tax project cash flow amounts to US$794 million. Before financing, the project has a 46% after-tax internal
rate of return and payback of approximately two years.
A summary of the key estimated LoM production data in the PEA is summarized as follows:
Life of Mine 24 years
Processing Rate - Phase I 7,000 tpd / 2.6 Mtpa
Processing Rate - Phase II (starting in yr 6) 14,000 tpd / 5.1 Mtpa
Recovered Gold 5.4 Mozs
Recovered Silver 2.5 Mozs
Recovered copper 141.3 Mlbs
Average Gold Recovery 88.4%
Pre-production Mined Tonnage 17.1 Mt
Total Mined Tonnage (including pre-production) from Open Pit 665 Mt
Total Milled Tonnage from Open Pit 93.1 Mt
Open Pit Strip Ratio (waste: ore) 6:1
Total Mined & Milled Tonnage from Underground 14.2 Mt
Total Milled Tonnage 107.3 Mt
Average Annual Gold Production 225 Kozs
Average Mill Feed Grade - Gold 1.78 g/t
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A summary of the key operating and financial metrics over the 24-year mine life in the PEA is as follows;
Period Gold
Prod.
Revenue
(3)
Opex Royalties
and Freight
Insurance
Income
Taxes
Working
Capital
Operating
Cash
Flow
Sustaining
Capital
Free
Cash
Flow
Initial
Capex,
Net of
Up-Front
PMPA
Deposits
(4)
Project
Cash
Flow
Cash
Cost
(5)
AISC
(6)
kozs US$ Millions US$/oz
2021 (2) - - - 0 0 0 0 - - (3) (3) - -
2022 - - - 0 0 0 0 - - (78) (78) - -
2023 - - - 0 0 0 0 - - (135) (135) - -
2024 280 390 (92) (32) (38) (18) 210 (12) 198 - 198 439 480
2025 228 318 (96) (28) (34) (1) 159 (33) 126 - 126 540 686
2026 204 285 (95) (26) (24) 0 141 (24) 116 - 116 584 704
2027 207 289 (99) (26) (18) (1) 145 (94) 52 - 52 598 1,049
2028 189 263 (100) (24) 0 (0) 140 (188) (48) - (48) 649 1,642
2029 171 265 (131) (22) (12) (5) 95 (14) 81 - 81 735 816
2030 165 262 (141) (21) (10) (2) 88 (11) 77 - 77 785 849
2031 160 249 (148) (21) (4) (2) 74 (26) 48 - 48 893 1,058
2032 213 325 (150) (27) (25) (0) 123 (82) 41 - 41 692 1,076
2033 203 315 (152) (26) (28) (0) 109 (84) 25 - 25 714 1,126
2034 198 309 (192) (25) (12) (8) 72 (53) 19 - 19 923 1,190
2035 225 337 (210) (26) (11) (4) 86 (71) 15 - 15 940 1,254
2036 290 441 (210) (33) (40) 0 158 (34) 124 - 124 709 827
2037 248 367 (213) (29) (23) (1) 102 (7) 95 - 95 885 913
2038 245 355 (209) (28) (24) 1 93 (15) 78 - 78 911 973
2039 214 319 (206) (25) (17) 1 72 (30) 43 - 43 978 1,115
2040 232 345 (209) (27) (25) (0) 84 (44) 40 - 40 919 1,107
2041 340 491 (204) (39) (68) 1 181 (5) 176 - 176 659 673
2042 352 513 (204) (40) (71) 0 198 (67) 131 - 131 625 817
2043 275 407 (200) (32) (44) 1 133 (6) 127 - 127 750 772
2044 300 442 (201) (34) (54) (0) 152 (14) 138 - 138 704 751
2045 203 312 (178) (23) (27) 5 88 (7) 81 - 81 846 882
2046 173 254 (128) (20) (26) 10 90 (2) 88 - 88 773 783
2047 92 133 (73) (11) (12) 11 48 (22) 26 - 26 849 1,092
2048 - - - 0 0 14 14 - 14 - 14 - -
Total 5,407 7,988 (3,843) (641) (650) - 2,855 (944) 1,911 (217) 1,694 742 916
(1) All figures are rounded to reflect the relative accuracy of the estimate. Totals may not sum due to rounding.
(2) Commencing November 2021.
(3) Revenue is based on long-term gold and silver prices of US$1,500 and US$20.22 per ounce, respectively, and US$3.13 per lb
for copper. Revenues reflect the terms of the PMPA with WPMI. Under the terms of the PMPA, WPMI will purchase 10% of the
gold and 50% of the silver production in exchange for up -front cash deposits totaling $153.5 million, of which US$15.5 million
has already been received and the remaining US$138.0 million will be received during construction of the Project. In addition,
WPMI will make ongoing payments to the Company once Toroparu is in operation at the lesser of the market price and US$400
per payable ounce of gold delivered over the life of the Project (subject to a 1% annual increase starting after the third year of
production) and at the lesser of the market price and US$3.90 per payable ounce of silver delivered over the life of the Project
(subject to a 1% annual increase starting after the fourth year of production).
(4) Initial capex represents the upfront capital costs for the development and construction of the Project totaling US$352.8 million,
net of US$138.0 million of up-front cash deposits to be received from WPMI under the PMPA.
(5) Cash cost per ounce is a non -IFRS measure and is calculated on a by-product credit basis by deducting revenues from silver
and copper production from the sum of opex, royalties and freight insurance and dividing the sum by the number of gold ounces
produced. Opex includes mining, processing, site administration costs, freight, treatment and refining charges.
(6) AISC per ounce is a non-IFRS measure which adds sustaining capital per ounce produced to cash cost per ounce.
A conventional truck-shovel method was considered for the open pit portion of the Toroparu Deposit. The
open pit analysis results in several distinct open pits coalescing into the NW and Main Toroparu Pits over
time. The Sona Hill and Southeast Zone (SE) will be developed in a similar fashion beginning in year 3 and
6 respectively. The final dimensions of the NW Pit are approximately 990 m long x 690 m wide x 360 m
deep. The dimensions of the Main Pit are approximately 1,300 m long x 750 m wide x 470 m deep. The
open pit LoM plan proposes to mine approximately 93 Mt at a cut -off grade of 0.5 g/t Au and 558 Mt of
waste rock material. The average stripping ratio for the open pit operations is 6:1 over the LoM. Each pit
is currently planned to be developed with 29 phases each. Compacted saprolitic waste material will be
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used to construct haul roads, facility pads and flood control berms, levies and other structures.
Underground development will commence at the beginning of the ninth year of open pit operation and
targets 3,500 tpd, ramping up to full production over an approximately two-year period. The ramp-up allows
for the main ramp system development at the 250 m elevation down from the surface portal in the NW Pit
and to connect to both fresh air and return air raises, providing ventilation and secondary egress for the
mine. Underground production is scheduled based on approximately 3,500 tpd mill feed and 750 tpd
average waste, excavated using a fleet of 15 and 10 tonne load-haul-dump loaders, hauled with 45 tonne
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trucks using the ramps to portals entrances and rehandled using the surface fleet. Production is expected
to commence in the central area between the Main and NW Pits from 360 Level (approximately 360 m
elevation below surface) and continues for the first 2 years in a bottom -up sequence. It is anticipated that
mining next transitions to production from lower mining areas below and around Main and NW Pits for
approximately the final 10 years of the LoM.
Next Steps Toward the Development of the Toroparu Project
The results of the PEA for Toroparu affirm the Project’s technical and financial merits using base case and
sensitivity metal price assumptions and the inputs in some areas from advanced historical studies
completed by Gold X Mining that were at Pre-Feasibility Study (“PFS”) or Feasibility Study (“FS”) levels.
The Company plans to execute the mine plan outlined in the PEA in phases, commencing initially with
construction of the Phase I surface mine and the 7,000 tpd gold leach process mill. A PFS focused on the
initial 10 years of surface mining is anticipated to be completed in the first quarter of 2022.
The Government had previously accepted the pr evious PEA prepared by Gold X Mining in July 2019 as
satisfying the requirement in the Company’s Mineral Agreement for delivery of a technical study
demonstrating the feasibility of the Project . S ince this new PEA reflects a major, and much improved,
change in the operating plan for the Project, it is expected that the Government will review this PEA prior
to issuing the Mining License in 2022.
The Company has hired Haukes Construction (Guyana) Ltd., a division of Haukes NV of Suriname, for
construction of the preliminary earthworks at Toroparu, with development of the permanent man -camp,
airstrip and rock quarries currently underway. Rehabilitation o f the historical access road constructed in
2004 that links Toroparu to tidewater at It aballi Station, at the confluence of the Mazaruni , Cuyuni and
Essequibo Rivers, is expected to commence in the first quarter of 2022.
Technical Report and Qualified Persons
A Technical Report prepared in accordance with NI 43-101 for the Toroparu Gold Project PEA will be filed
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on SEDAR (www.sedar.com) on or before January 14, 2022. Readers are encouraged to read the Technical
Report in its entirety, includi ng all qualifications, assumptions and exclusions that relate to the Mineral
Resource. The Technical Report is intended to be read as a whole, and sections should not be read or
relied upon out of context.
Disclosure of a scientific or technical nature in this news release has been approved by Glen Kuntz, P. Geo.
(Ontario) of Nordmin Engineering Ltd., a "Qualified Person". Mr. Kuntz has verified the data disclosed in
this news release, including sampling, analytical and test data underlying the information it contains.
The Qualified Person responsible for the preparation of the Toroparu Gold Project Updated Mineral
Resource Estimate is Glen Kuntz, P. Geo. (Ontario) of Nordmin Engineering Ltd. The Qualified Person
responsible for the preparation of the Ope n Pit Mine Design and Costing, Combined Underground and
Open Pit Production schedule, and Economic analysis is Fernando Rodrigues, P. Eng. of SRK Consulting
(USA) Ltd. The Qualified Person responsible for the preparation of the Underground Mine Design Costing,
and Sequencing is Brian Wissent, P. Eng. (Ontario) of Nordmin Engineering Ltd. The Qualified Persons
responsible for the preparation of the Pit Slope and Underground Geotechnical Designs and specifications
are Daniel Yang, P. Eng. and Ben Peacock, P. Eng. of Knight Piesold. Kurt Boyko, P.Eng., of Nordmin
Engineering Ltd. is the Qualified Person responsible for processing, metallurgy, and Surface Infrastructure.
Gonzalo Nureno, P. Eng. of Klohn Crippen Berger is the Qualified Person responsible for desi gn of the
TSF, its water management infrastructure, site water balance and surface water management, and Closure.
Each of Messrs. Kuntz, Rodrigues, Wissent, Yang, Peacock, Boyko, and Nureno are considered to be an
“Independent Qualified Person” under NI 43-101.
About GCM Mining Corp.
GCM Mining Corp. is a mid-tier gold producer with a proven track record of mine building and operating in
Latin America. In Colombia, the Company is currently the largest underground gold and silver producer
with several mines in operation at its high-grade Segovia Operations. In Guyana, the Company is advancing
the Toroparu Project, one of the largest undeveloped gold/copper projects in the Americas. The Company
also owns an approximately 44% equity interest in Aris Gold Corporation (TSX: ARIS) (Colombia –
Marmato), an approximately 27% equity interest in Denarius Silver Corp. (TSX-V: DSLV) (Spain – Lomero-
Poyatos; Colombia – Guia Antigua and Zancudo) and an approximately 26% equity interest in Western
Atlas Resources Inc. (TSX-V: WA) (Nunavut – Meadowbank).
Additional information on GCM Mining can be found on its website at www.gcm-mining.com and by
reviewing its profile on SEDAR at www.sedar.com.
Cautionary Statement on Forward-Looking Information:
This news release contains "forward -looking information", which may include, but is not limited to,
statements with respect to Mineral Resource estimates, future production, the development and
construction of mining and processing operations, capital expenditures and projected financial results, and
the timing of any of the foregoing, in addition to its anticipated business plans or strategies. Often, but not
always, forward-looking statements can be identified by the use of words such as "plans", "expects", "is
expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "bel ieves" or
variations (including negative variations) of such words and phrases, or state that certain actions, events
or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. Forward -looking
statements involve known and unknown risks, uncertainties and other factors which may cause the actual