Mineral Resources

Mineral Resources

Measured and Indicated Resources
Project
Category
Tonnes
Au Grade
(g/t) 
Ag Grade
(g/t)
Contained
Au oz 
Contained
Ag oz 
  Cameron (1)
  Measured
3,360,000
2.75
-
297,000
-
  Duparquet (2)
  Measured
18,470
1.52
-
901
-
  Springpole (3)
  Indicated
139,100,000
1.04
5.40
4,670,000
24,190,000
  Goldlund (4)
  Indicated
12,860,000
1.96
-
809,200
-
  Hope Brook (5)
  Indicated
5,500,000
4.77
-
844,000
-
  Cameron (1)
  Indicated
2,170,000
2.40
-
167,000
-
  Duparquet (2)
  Indicated
7,122,070
1.73
-
396,134
-
  Duquesne (6)
  Indicated
1,859,200
3.33
-
199,161
-
  Total
  Measured
3,378,470
2.74
-
297,901
 
  Total
  Indicated
168,611,270
1.30
5.40
7,085,495
24,190,000
  Total
  Measured & Indicated
171,989,740
1.33
5.40
7,383,396
24,190,000
Inferred Resources
Project
Category
Tonnes
Au Grade
(g/t) 
Ag Grade
(g/t)
Contained
Au oz 
Contained
Ag oz 
  Springpole (3)
  Inferred
11,400,000
0.63
3.10
230,000
1,120,000
  Goldlund (4)
  Inferred
18,362,000
1.49
-
876,954
-
  Hope Brook (5)
  Inferred
836,000
4.11
-
110,000
-
  Cameron (1)
  Inferred
6,535,000
2.54
-
533,000
-
  Pickle Crow (7)
  Inferred
9,452,000
4.10
-
1,230,500
-
  Duparquet (2)
  Inferred
4,066,284
1.85
-
242,312
-
  Duquesne (6)
  Inferred
1,563,100
5.58
-
280,643
-
  Pitt (8)
  Inferred
1,076,000
7.42
-
257,000
-
  Total
  Inferred
53,290,384
2.21
3.10
3,760,409
1,120,000

* General Notes for Above Resources:

a) The rounding of tonnes may result in apparent differences between tonnes, grade and contained ounces.

b) Mineral resources that are not mineral reserves do not have demonstrated economic viability. The estimate of mineral resources may be materially affected by environmental permitting, legal, title, taxation, sociopolitical, marketing or other relevant issues.

(1) Notes for Cameron:

  • Based on the technical report titled “Technical Report on the Cameron Gold Deposit, Ontario, Canada”, dated effective January 17, 2017, which was prepared for First Mining by Optiro Pty Limited in accordance with NI 43-101, and which is available under First Mining's SEDAR profile at www.sedar.com.
  • 2014 CIM Definition Standards were followed for classification of mineral resources.
  • The mineral resource estimate is classified as Measured, Indicated and Inferred mineral resources.
  • The mineral resource has been estimated using a gold price of US$1,350 per ounce.
  • The mineral resource was estimated using a block model. Three dimensional wireframes were generated using geological information. The ordinary kriging estimation method was used to interpolate grades into blocks. Blocks were sub-blocked to more accurately reflect the volume of the wireframes.
  • Mineral resources that are not mineral reserves do not have demonstrated economic viability. There is currently insufficient exploration to define these Inferred mineral resources as Indicated or Measured mineral resources and it is uncertain if further exploration will result in upgrading them to an Indicated or Measured mineral resource category.
  • Numbers may not add due to rounding.
  • The mineral resource for the Cameron Gold Project does not include the mineralized material from the Dubenski and Dogpaw areas.

(2) Notes for Duparquet:

  • Based on the NI 43-101 technical report titled “Technical Report and Prefeasibility Study for the Duparquet Project (according to National Instrument 43-101 and Form 43-101F1)", which has an effective date of March 26, 2014, and a signature date of May 23, 2014. The report is available at www.sedar.com under the SEDAR profile for Clifton Star Resources Inc.
  • Cut-off grade = >0.45 g/t Au (Tailings), >0.45 g/t Au (In-pit), > 2.00 g/t Au (Underground)
  • Gold price assumption = CDN$1,450 per ounce.
  • First Mining owns 100% of the Central Duparquet Property, and a 10% indirect interest in the Duparquet Gold Project. The Measured, Indicated, and Inferred mineral resources for Duparquet shown in the above table reflect both of these ownership interests.

(3) Notes for Springpole:

  • Based on the technical report titled "Preliminary Economic Assessment Update for the Springpole Gold Project, Ontario, Canada", dated November 5, 2019, which was prepared for First Mining by SRK Consulting (Canada) Inc. in accordance with NI 43-101 and is available at www.sedar.com under First Mining's SEDAR profile. Readers are cautioned that the PEA is preliminary in nature, it 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 mineral reserves, and there is no certainty that the PEA will be realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
  • 2014 CIM Definition Standards were followed for the classification of mineral resources. Open pit mineral resources are reported at a base-case cut-off grade of 0.4 g/t gold. Cut-off grades are based on a gold price of $1,400 per ounce and a gold processing recovery of 80%, and a silver price of $15 per ounce and a silver processing recovery of 60%.
  • Appropriate mining costs, processing costs, metal recoveries and inter ramp pit slope angles were used to generate the pit design.
  • The estimated life of mine strip ratio for the resource estimate is 2.1.
  • Rounding may result in apparent summation differences between tonnes, grade and contained metal content.
  • Tonnage and grade measurements are in metric units. Contained gold and silver ounces are in troy ounces.
  • All composites have been capped where appropriate.

(4) Notes for Goldlund:

  • Based on the technical report titled "Technical Report and Resource Estimation Update, Goldlund Gold Project, Sioux Lookout, Ontario" with an effective date of March 15, 2019, which was prepared for First Mining by WSP Canada Inc. in accordance with NI 43-101, and which is available under First Mining's SEDAR profile at www.sedar.com.
  • 2014 CIM Definition Standards were followed for the classification of mineral resources.
  • A base case cut-off grade of 0.4 g/t Au was used for the mineral resource estimate.
  • Resources are stated as contained within a conceptual pit shell using a metal price of US$1,350 per ounce of gold, mining costs of US$2.00 per tonne, processing plus G&A costs of US$15,40 per tonne, 93% recoveries and an average pit slope of 48 degrees.
  • 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.
  • Mineral resource tonnage and contained metal have been rounded to reflect the accuracy of the estimate, and numbers may not add due to rounding.

(5) Notes for Hope Brook:

  • Based on the technical report titled “2015 Mineral Resource Estimate Technical Report, Hope Brook Gold Project, Newfoundland and Labrador, Canada", effective date January 12, 2015, which was prepared for First Mining by Mercator Geological Services Limited in accordance with NI 43-101, and which is available under First Mining's SEDAR profile at www.sedar.com.
  • 2014 CIM Definition Standards were followed for the classification of mineral resources.
  • Cut-off grade = 3.0 g/t Au.
  • Long-term gold price of US$1,200 per ounce.
  • This resource includes on the Mine Zone and 240 Zone areas.
  • This resource is based on the partial percentage block model with dike material removed. Dike percentage is estimated at 18% for the Mine Zone and 0% for the 240 Zone.
  • The gold grades reflect applications of domain-specific raw assay capping factors that range between 55 g/t and 3 g/t.

(6) Notes for Duquesne:

  • Based on the technical report titled “43-101 Technical Report Resource Estimate of The Duquesne Gold Property” dated July 26, 2011, which is available at www.sedar.com under the SEDAR profile for Clifton Star Resources Inc.
  • Cut-off grade = 1.0 g/t Au without taking into account the width and no dilution was applied when the horizontal width was 1 metre or less.

(7) Notes for Pickle Crow

  • Based on the technical report titled “An Updated Mineral Resource Estimate for the Pickle Crow Property, Patricia Mining Division, Northwestern Ontario, Canada” dated June 15, 2018, which was prepared for First Mining by Micon International Limited in accordance with NI 43-101, and which is available under First Mining's SEDAR profile at www.sedar.com.
  • 2014 CIM Definition Standards were followed for the classification of mineral resources.
  • Diluted to a minimum 1.0 metre width.
  • Entirely classified as an Inferred mineral resource.
  • The narrow-vein, selective underground component of the mineral resource has been estimated at a cut-off grade of 2.6g/t Au.
  • The long-hole bulk underground (moderate-grade) component of the mineral resource has been estimated at a cut-off grade of 2.0 g/t Au.
  • The open pit (low-grade) component of the mineral resource has been estimated at a pit discard cut-off grade of approximately 0.5 g/t Au, using a preliminary Whittle pit shell to constrain the resource estimate and other assumed pit parameters.
  • The mineral resource has been estimated using a gold price of US$1,300 per ounce.

(8) Notes for Pitt:

  • Based on the technical report titled “NI 43-101 Technical Report and Review of the Preliminary Resource Estimate for the Pitt Gold Project, Duparquet Township, Abitibi Region, Quebec, Canada” dated January 5, 2017, which was prepared for First Mining by Micon International Limited in accordance with NI 43-101, and which is available under First Mining's SEDAR profile at www.sedar.com.
  • Cut-off grade = 3 g/t Au, Minimum block width = 1.5 metres, Dilution grade = 0 g/t, Capping grade = 35 g/t Au.

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