Mineral Resource
Estimate

Measured, Indicated, & Inferred Mineral Resource Estimate for the North Bullfrog Project (Constrained by Whittle™ pit volumes, including both the YellowJacket Vein/Stockwork & Disseminated Oxide Mineralization @ $1,250 Gold Price)

Phase 1 Mill Resource
(oxide & sulfide)
Disseminated
(Heap Leach)
Total Resource
Resources Category Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Measured 5.22 1.79 12.72 300 2,136 5.19 0.37 2.42 62 404 10.41 1.08 7.59 362 2,540
Indicated 5.58 1.75 11.86 314 2,128 18.98 0.37 1.30 228 791 24.56 0.69 3.70 542 2,919
Total M&I 10.80 1.77 12.28 614 4,264 24.17 0.31 0.45 290 1,195 34.97 0.80 4.86 904 5,459
Inferred 0.05 1.90 18.41 3 29 155.29 0.20 0.70 56 111 5.91 0.31 0.74 59 140
 
Phase 2 Mill Resource
(oxide & sulfide)
Disseminated
(Heap Leach)
Total Resource
Resources Category Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Measured 0.80 1.01 3.27 26 84 9.33 0.19 0.85 58 254 10.13 0.26 1.04 84 338
Indicated 2.73 1.04 2.96 91 260 110.28 0.19 0.55 680 1,967 113.01 0.21 0.61 771 2,227
Total M&I 3.53 1.03 3.03 117 344 119.61 0.19 0.58 738 2,221 123.14 0.22 0.65 855 2,565
Inferred 0.07 1.39 2.32 3 5 58.81 0.19 0.47 364 897 58.88 0.19 0.48 367 902
 
Phase
1 & 2
Mill Resource
(oxide & sulfide)
Disseminated
(Heap Leach)
Total Resource
Resources Category Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Measured 6.02 1.68 11.47 326 2,220 14.53 0.26 1.41 120 658 20.54 0.68 4.36 446 2,878
Indicated 8.32 1.51 8.93 405 2,388 129.25 0.22 0.66 909 2,758 137.57 0.30 1.16 1,314 5,146
Total M&I 14.33 1.59 10.00 731 4,608 143.78 0.22 0.74 1,029 3,416 158.1 0.35 1.58 1,760 8,024
Inferred 0.12 1.61 9.12 6 34 64.67 0.20 0.48 420 1,008 64.79 0.20 0.50 426 1,042
 
Sulfide Phase 1 Mill Resource Phase 2 Mill Resource Total Mill Resource (Phase 1 & 2)
Resources Category Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Tonnes (Mt) Gold (g/t) Silver (g/t) Gold
k ounces
Silver
k ounces
Measured 0.76 1.32 5.35 32 130 0.40 1.24 2.48 16 32 1.16 1.29 4.35 48 162
Indicated 1.14 1.56 5.83 57 213 1.40 1.18 1.82 53 82 2.54 1.35 3.61 110 295
Total M&I 1.89 1.46 5.64 89 343 1.80 1.19 1.97 69 114 3.70 1.33 3.85 158 457
Inferred 0.02 2.07 16.59 1 8 0.06 1.53 2.04 3 4 0.08 1.64 4.91 4 12

* Breakeven grade derived from WhittleTM input parameters (on final page), Mineral Resources that are not mineral reserves do not have demonstrated economic viability

Mr. Scott Wilson of Metal Mining Consultants, Inc has acted as the independent Qualified Persons as defined in NI 43-101 and produced the updated mineral resource estimate effective as at October 31, 2017.  The full NI 43-101 Technical Report titled “Technical Report for Combined Mill and Heap Leach Processing at the North Bullfrog Project, Bullfrog Mining District, Nye County, Nevada” will be available on SEDAR or the Company’s website on Dec. 14, 2017.  The Whitte Pit input parameters and assumptions can be seen on the final page.  See Cautionary Note to U.S. Investors. . Sulfide Mineral Resources have been added to the NBP Mineral Resources based on previously identified materials that lie within the YellowJacket zone and 2017 drilling in the Swale and Liberator areas. The majority of the identified sulfide mineralization is along the YellowJacket zone and was previously identified as waste material.  Metallurgical test work on sulfide mineralization from the Sierra Blanca, Pioneer Tuff, Rhyolite and Dacite rock types in the YellowJacket area indicate high gold and silver recoveries possible using flotation to produce a concentrate, fine grinding of the concentrate, oxidation of the concentrate using the AAO method followed by cyanide leaching of the resulting filter cake.  Gold recoveries with this processing approach ranged between 87% and 94%. Both Soda Ash and Trona were used in the tests as the neutralizing agent and the tests were conducted by Hazen Research Inc., of Golden, Colorado.