Millrock Reports Drill Results from LA Navidad GOLD Project, Sonora State, Mexico
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: 18-04
MILLROCK REPORTS DRILL RESULTS FROM LA NAVIDAD
GOLD PROJECT, SONORA STATE, MEXICO
VANCOUVER, BRITISH COLUMBIA, March 6, 2018 - Millrock Resources Inc. (TSX-V: MRO,
OTCQX: MLRKF) ("Millrock") is pleased to report that the first phase of core drilling on the La
Navidad gold project has been completed. The project, located in Sonora State, Mexico, 100 km
north of the City of Hermosillo, targets orogenic gold deposits and is being funded under an
option to joint venture agreement by Centerra Gold Inc. (“Centerra”). In total, 2,130 meters in 12
holes were drilled. The table following on the next page indicates significant and anomalous drill
intersections.
Millrock President & CEO Gregory Beischer commented: “Some strong results were obtained in
this program from the Anchor Zone. Drilling is tentatively planned to resume in April 2018 to test
the large gold-in-soil anomalies of the Crossover and Cobre prospects that lie north and
northwest of Anchor respectively.”
Anchor and Horseshoe Zone Drilling
Holes NAV-001, NAV-002, NAV-003, and NAV-010 returned strong results. All four holes fall on
section line 520,700 and indicate mineralization in the shallow subsurface over a distance of
500 meters in a north-south direction. Holes NAV-004, NAV-005 and NAV-011, drilled 200
meters west on section line 520,500 were also strongly anomalous, extending mineralization in
a westerly direction. Holes NAV-006, NAV-007, NAV-008 and NAV-009 which were drilled
further west on section line 520,100 at the adjacent Horseshoe Zone returned weaker, narrower
intersections. It had been hoped that the two zones would join together but they do not appear
to do so. Therefore, the ability to build tonnage further west from the Anchor zone appears to be
limited. The next exploration effort will work areas to the north and northwest where strong gold
soil anomalies exist at the Crossover and Cobre prospects. Further mapping is underway in
anticipation of the next drilling program.
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 Reports Drill Results From La
Navidad Gold Project, Mexico
Page 2
Note: The mineralized intervals reported are down-hole, measured thickness. Based on initial interpretations it
appears the mineralized zone dips shallowly to the north at 15 degrees. However, there is not enough geologic
control at this point to verify the interpretation and therefore to make an accurate estimate of true width with
confidence. For the composited values reported, a 0.1 gram per tonne gold cut-off was used, and a maximum
allowable internal dilution thickness of 2.05 meters was used. See note below concerning quality control – quality
assurance.
Hole # Easting Northing Elevation Azimuth Dip Total Depth (m) From (m) To (m) Length (m) Gold (ppm)
NAV-001 520700.00 3366625.00 1102.00 180° -65 200.00 2.7 19.9 17.20 0.746
including 6.4 7.45 1.05 9.103
25.3 26.5 1.20 0.265
40.9 43.9 3.00 0.208
55.20 56.20 1.00 0.102
NAV-002 520700.00 3366745.00 1120.00 180° -60 199.50 34.90 50.55 15.65 0.603
114.50 116.50 2.00 0.109
126.50 128.50 2.00 0.102
NAV-003 520700.00 3366900.00 1116.00 180° -60 209.50 12.00 30.30 18.30 0.333
74.90 76.90 2.00 0.161
NAV-004 520500.00 3366700.00 1126.00 180° -70 171.50 40.70 43.20 2.50 0.565
62.90 66.65 3.75 0.342
NAV-005 520500.00 3367200.00 1133.00 180° -60 193.50 1.70 4.75 3.05 0.425
10.95 12.45 1.50 0.111
23.50 25.80 2.30 0.116
64.95 66.70 1.75 0.141
NAV-006 520104.00 3367226.00 1132.00 180° -50 126.00 69.00 72.00 3.00 0.220
81.00 99.00 18.00 0.116
NAV-007 520100.00 3367436.00 1158.00 180° -50 111.00 12.00 17.30 5.30 0.160
23.85 24.95 1.10 0.112
47.50 49.50 2.00 0.191
73.50 79.50 6.00 0.262
NAV-008 520099.00 3367682.00 1143.00 180° -50 195.00 no significant results
NAV-009 520094.00 3367344.00 1153.00 180° -50 138.00 0.60 3.60 3.00 0.420
19.70 25.60 5.90 0.446
83.90 85.20 1.30 0.113
86.50 87.80 1.30 0.127
89.10 90.40 1.20 0.137
NAV-010 520698.00 3367183.00 1120.00 180° -65 255.50 69.60 71.65 2.05 0.370
93.45 95.70 2.25 0.122
134.35 135.50 1.15 0.166
152.75 154.60 1.85 0.152
198.50 255.50 57.00 0.295
including 225.50 228.50 3.00 2.771
NAV-011 520495.00 3366993.00 1112.00 180° -65 180.50 21.70 24.00 2.30 0.112
99.60 116.20 16.60 0.347
150.60 153.60 3.00 0.813
NAV-012 520860.00 3366688.00 1116.00 180° -60 150.00 105.00 111.00 6.00 0.122
144.00 147.00 3.00 0.341
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 Reports Drill Results From La
Navidad Gold Project, Mexico
Page 3
Since forming an option to purchase agreement with the underlying mineral right owner of La
Navidad in June 2017, and a simultaneous option to joint venture agreement with Centerra,
Centerra and Millrock have collaborated to execute a comprehensive exploration program. Initial
surface exploration results were reported in this press release by Millrock. Centerra is funding
the exploration work to earn an interest in the project.
The La Navidad project targets bulk mineable, run-of-mine, oxidized deposits that could be
processed by heap leaching. The prospects at La Navidad bear the characteristics of an
orogenic gold system similar in nature to other gold deposits being mined or developed in the
district including:
• Lluvia de Oro (Metallōrum Holding);
• Santa Gertrudis (Agnico Eagle Mines Limited); and the
• San Francisco Mine (Alio Gold Inc.).
Alio Gold’s San Francisco Mine is a prime example of the type of deposit sought by Millrock and
Centerra. On their website, Alio Gold reports Measured & Indicated Resources (inclusive of
Reserves) of 74.8 million tonnes grading 0.541 grams per tonne gold, containing 1.3 million
ounces of gold, and Proven & Probable Reserves of 54.8 million tonnes grading 0.527 grams
per tonne gold containing 0.9 million ounces of gold.
Quality Control – Quality Assurance
Millrock adheres to stringent Quality Assurance – Quality Control (“QA/QC”) standards. Drill
core and samples are kept in a secure location at all times. Representative half-core samples
were collected in the core shed in Magdalena and assayed at the Bureau Veritas laboratory in
Hermosillo, Mexico. Preparation and analysis methods are described in further detail here. The
sample preparation method code utilized was PRP70-250. Analysis methods used include
FA430 (30 gr/Fire Assay/AAS) and AQ-200 (Aqua Regia – ICP/MS). For every 20 rock samples
a blank sample MEG-12.02 (>0.003 ppm Au) known to contain less than 3 part per billion gold
and a standard sample (Certified Reference Materials – “CRM”) of known gold concentration
was also analyzed. Three different CRM standards were utilized in this program including MEG-
Au 11.15 (3.4 ppm Au), MEG-Au 12.11 (1.5 ppm Au) MEG-Au 13.01 (0.31 ppm Au). The
following QA/QC protocols were used for this program: 1) Duplicates were created as coarse
crush duplicates on every 20th sample in the sample preparation process at the laboratory, and
2) Blanks every 20th sample, and 3) CRM every 20th sample plus additional random insertions
of standards and blanks at the supervising geologist’s discretion, and 4) core sample field
duplicates.
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 Reports Drill Results From La
Navidad Gold Project, Mexico
Page 4
Upon review of the QA/QC results it was found that results were within acceptable tolerances
for most blanks and standards. However, results for standard MEG-Au 11.15 were observed to
have higher than expected values in most cases, near the upper margin of acceptability. Initially
two results exceeded three standard deviations, and so were not within tolerance. This called
into question the results reported for holes NAV-003 and NAV-008. The Bureau Veritas
laboratory performed a reanalysis of the core samples brought into question and results were
found to be nearly identical. However, one of the standard samples from Hole NAV-008
remained out of tolerance, possibly because of small remaining sample size. As a further check,
Millrock sent 20 samples from each of holes NAV-003 and NAV-008 to another laboratory with
standard and blank samples. Results returned were very close to the original analysis made by
Bureau Veritas. Also, as part of its protocols, Millrock sends duplicate core samples to the
laboratory. The usual protocol is to cut the core in half, then cut one half of the core in quarters.
Both quarters are sent to the laboratory as individual samples, and results should be similar.
However, a sampling error was made by the project team. A half core and quarter core sample
was sent to the lab as duplicate samples. The results of the half core versus quarter core did not
match well. This is expected due to the radically different sample size. Unfortunately, this
sampling error is not something that can be corrected. Given that the two re-analyses have
provided very similar results as the initial assays, the Qualified Person is of the opinion that the
results reported in this press release are reliable.
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.
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 active in Alaska, British Columbia, the southwest USA and Sonora
State, Mexico. 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: Centerra Gold, First Quantum, Teck, Kinross, Vale, Inmet, Altius, and
Riverside. Millrock is a major shareholder of junior explorers PolarX Limited. and Sojourn
Exploration Inc.
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 Reports Drill Results From La
Navidad Gold Project, Mexico
Page 5
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. 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 the completion of
planned expenditures, the ability to complete exploration programs on schedule and the
success of exploration programs.