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Millrock Reports Operations Update: Aurora Target Drilling and Geophysical Surveys, WEST Pogo Block, 64NORTH GOLD Project, Alaska

Mine Development & Operations Exploration Programs

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

NR: 20-10

MILLROCK REPORTS OPERATIONS UPDATE:

AURORA TARGET DRILLING AND GEOPHYSICAL

SURVEYS, WEST POGO BLOCK, 64NORTH GOLD

PROJECT, ALASKA

Highlights:

• The planned program of 2,300 meters in three holes is well underway.

• Hole 20AU003 has been completed and tested gently northwest-dipping structures

detected by CSAMT geophysical surveys in a low magnetic area.

• Hole 20AU004 is in progress and is being drilled to 950 meters to test a CSAMT

conductor in the vicinity of the Half-Ounce Gulch gold prospect.

• Assay results from the current program are anticipated in late August/early

September.

• An airborne magnetic ZTEM – MAG survey has been completed over the Aurora and

Echo Targets, as well as the neighbouring Goodpaster gold deposit.

• Detailed airborne magnetic surveys are being flown in a collaborative effort with the

State of Alaska Division of Geological and Geophysical Surveys.

• Plans are being made to test the Echo target, which is located in the down-dip direction

from the adjacent Pogo Mine and Goodpaster prospect on the adjacent property owned

by Northern Star Resources Limited.

VANCOUVER, BRITISH COLUMBIA, July 10, 2020 - Millrock Resources Inc. (TSX-V: MRO,

OTCQB: MLRKF) ("Millrock" or the “Company”) is pleased to provide an update on drilling and

other exploration at its 64North Gold project. Exploration work is being funded and managed by

Resolution Minerals (“Resolution” ASX: RML) in a collaborative arrangement with Millrock as the

project operator. The 64North Gold Project is a very large tract of claims in Alaska’s emerging

Goodpaster Gold District. Drilling has been ongoing since early June and continues at present.

The drilling program is focused on the Aurora Target, with approximate hole locations shown in

Figure 1.

The target being drilled at Aurora is adjacent and immediately west of the Pogo Mine property,

which is owned and operated by Northern Star Resources Ltd. (“Northern Star”). Northern Star

has previously reported a gold resource of 5.95 million ounces of gold in a series of veins

grading 9.6 grams per tonne gold (Source: Northern Star website). More than four million

ounces of gold has already been mined at Pogo, and Northern Star has recently announced a

new gold discovery called the Goodpaster deposit a short distance away from the mutual claim

boundary. Millrock cautions that mineralization on the nearby Northern Star property is not

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

Millrock Provides Exploration Update

64North Gold Project, Alaska

Page 2

necessarily indicative of gold mineralization hosted on the Company’s property. Presently, hole

20AU004 is testing a CSAMT conductive zone on-trend and below the Half-Ounce Gulch

prospect (“HOG” on Figure 1). High-grade gold grab samples have been reported from prior

workers at this site, and two historic drill holes intersected high-angle veins beneath the

prospect. The earlier workers did not have the benefit of the CSAMT data shown in Figure 2,

and those earlier holes (MR12-01 and MR12-02) were not drilled deep enough to intersect the

shallow-dipping conductive zone that Millrock postulates to represent low-angle fault structures

with quartz veining, sulfides, and gold mineralization. The hole is presently at 900 meters depth

below surface.

Millrock President & CEO commented: “Hole 20AU004 is an exciting hole to drill. We believe the

gold mineralization at surface is a good indicator for gold below surface in flat-lying structures.

We are drilling through the target zone now. The ZTEM survey, if successful in detecting the

conductive zones initially indicated by the CSAMT ground-based method, could result in great

efficiencies in future exploration of other prospects across our expansive, district-scale land

holdings.”

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

Millrock Provides Exploration Update

64North Gold Project, Alaska

Page 3

Figure 01. Airborne magnetic base map with CSAMT conductors and progressing airborne ZTEM / Magnetic Survey

Areas with historic, planned, and recently completed drill hole locations.

Currently Drilling

Flying Now

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

Millrock Provides Exploration Update

64North Gold Project, Alaska

Page 4

Figure 02. CSAMT cross-section results for Line 3 with historic holes MR12-01 and MR12-02 projected to plane of

section. Reddish areas represent increased conductivity, which indicates increased rock alteration by mineralizing

fluids and sulfide minerals that may be accompanied by gold mineralization.

The Aurora target is a two-kilometer by five-kilometer zone of low-magnetic rocks adjacent to a

late diorite intrusion. The setting is very similar to that observed at the nearby Pogo Mine.

Millrock postulates that the late diorite body intruded along a westerly extension of the Liese

Creek fault, which is known to have played a key role in the genesis of the Pogo gold deposits.

Highly anomalous gold-bismuth-arsenic in soil is documented. High-angle gold-bearing quartz

veins have been intersected by prior drilling. However, the few holes drilled by earlier workers

did not go deep enough to intersect the low-angle, regional shear zone that is known to host

gold at Pogo and the Goodpaster Deposit. Millrock believes this structure exists at the Aurora

target.

Numerous zones of mafic rocks, fault zones, and quartz veins intercepted in drill hole 20AU001

fit with the exploration model. The low-angle, regional shear preferentially ruptured the mafic

lithological layers. The Aurora Target is located in this regional shear and the current drill hole

Drilling Now

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

Millrock Provides Exploration Update

64North Gold Project, Alaska

Page 5

program will test the shear for gold mineralization in a variety of places. The regional shear at

Aurora was detected by CSAMT and ELF ground-based geophysical surveys in 2019. The

ZTEM airborne survey that was completed on July 8 and 9, 2020, has been executed in the

same area (see dark blue outline on Figure 1), along with detailed airborne magnetic surveys. If

the airborne methods are able to detect the regional shear effectively, the method may be

applied elsewhere on the project in a very cost-effective manner.

Millrock has developed a comprehensive COVID-19 safety plan with clear protocols that will

help keep the operating team safe. The plan has been submitted to the relevant agencies and

approved by the State of Alaska. So far, the exploration team has remained in good health.

Resolution can earn up to a 60% interest in the 64North Gold Project through exploration

expenditures of US$20 million, payment of US$200,000 cash, and issuance of 38 million

Resolution shares. The minimum commitment for 2020 is US$5.0 million. Other details of the

agreement between Millrock and Resolution are documented in Millrock’s announcement made

on December 16, 2019.

Quality Control and Quality Assurance

Millrock adheres to stringent Quality Assurance–Quality Control (“QA/QC”) standards. Drill core

samples are kept in a secure location at all times. For this program, representative half-core

samples will undergo sample preparation at ALS Chemex prep laboratory in Fairbanks, Alaska

USA. Samples will be subsequently analyzed at ALS Chemex laboratories in Vancouver,

Canada. Gold will be analyzed by Fire Assay (specifically ALS code Au-AA25 - Au by fire assay

and AAS using a 30 gram nominal sample weight). Other elements (48 in total) will be analyzed

using ALS method code ME-MS61 which involves a four-acid "near total" digestion and an ICP-

MS + ICP-AES finish. The following QA/QC protocols have been adopted for this program: 1)

Duplicates will be created as coarse crush duplicates on every 50th sample (2% insertion) in the

sample preparation process at the laboratory, and 2) Blank material is to be inserted at a rate of

2 blanks per 100 samples (2% insertion) and 3) Standards–Certified Reference Material

(CRM’s) every 20th sample (5% insertion) plus additional random insertions at the supervising

geologist’s discretion. All results from duplicates, blan ks, and standards will be reviewed and if

found to be accurate and within acceptable tolerances the results will be published.

Qualified Person

The scientific and technical information disclosed within this document has been prepared,

reviewed and approved by Gregory A. Beischer, President, CEO and a director of Millrock

Resources. Mr. Beischer is a qualified person as defined in NI 43-101. Historic drill results for

hole MR-01 and MR-02were verified by Millrock personnel working under the supervision of Mr.

MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3

Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com

Millrock Provides Exploration Update

64North Gold Project, Alaska

Page 6

Beischer. Drill core was resampled and reassayed and similar results were obtained by the

company responsible for the historic work, Alix Resources.

About Millrock Resources Inc.

Millrock Resources Inc. is a premier project generator to the mining industry. Millrock identifies,

packages, and operates large-scale projects for joint venture, thereby exposing its shareholders

to the benefits of mineral discovery without the usual financial risk taken on by most exploration

companies. The company is recognized as the premier generative explorer in Alaska, holds

royalty interests in British Columbia, Canada and Sonora State, Mexico and is a significant

shareholder of junior explorer ArcWest Exploration Inc. and has a shareholding in Resolution

Minerals Limited. Funding for drilling at Millrock’s exploration projects is primarily provided by its

joint venture partners. Business partners of Millrock have included some of the leading names in

the mining industry: EMX Royalty, Centerra Gold, First Quantum, Teck, Kinross, Vale, Inmet

and, Altius as well as junior explorers Resolution, Riverside and PolarX.

ON BEHALF OF THE BOARD

“Gregory Beischer”

Gregory Beischer, President & CEO

FOR FURTHER INFORMATION, PLEASE CONTACT:

Melanee Henderson, Investor Relations

(604) 638-3164

(877) 217-8978 (toll-free)

Some statements in this news release contain forward-looking information (within the meaning

of Canadian securities legislation) including, without limitation, management’s expectation that

the planned drilling program will successfully be carried out. These statements address future

events and conditions and, as such, involve known and unknown risks, uncertainties and other

factors which may cause the actual results, performance or achievements to be materially

different from any future results, performance or achievements expressed or implied by the

statements. Such factors include, without limitation, Millrock’s ability to mobilize the drill rig and

camp and complete the drilling work and other customary risks of the resource industry.