Grande Portage Announces Metallurgical Gold Recoveries of up to 99.6% at the Herbert Gold Project
#501, 595 Howe Street, Vancouver, BC, V6C 2T5
Ph: (604) 899-0106
Grande Portage Announces Metallurgical Gold Recoveries of up to 99.6% at
the Herbert Gold Project
VANCOUVER, BC, October 1 5, 2018 – Grande Por tage Resources Ltd. (TSX-V: “GPG”);
(OTCQB: “GPTRF”); (Frankfurt: “GPB”); (“Grande Portage” or the “Company”) is pleased to
announce the results of metallurgical testing recently conducted at the Herbert Gold Project located
in southeast Alaska.
Highlights include:
The combined gravity+flotation gold recover ies on sample s #58524 and #339807
were 99.5% and 97.7%, respectively.
The whole -ore cyanidation gold recoveries on samples #58524 and #339807 were
99.6% and 98.4 %, respectively.
The grade of sample #58524 averaged 129.02 gpt/gold (3.77 ounces per tonne) and
68 gpt/silver (1.97 ounces per tonne) and sample #339807 averaged 26.82 gpt/gold
(0.78 ounces per tonne) and 33 gpt/silver (0.96 ounces per tonne).
Combined gravity+flotation silver recovery was 98.7% on sample #58524 and 90.6%
on sample #339807 whereas whole-ore cyanidation silver recoveries were 94.4% and
81.5% respectively.
Two samples were collected from two different veins on the Herbert property and submitted to
Bureau Veritas Minerals, Richmond, B.C. for metallurgical testing. Bureau Veritas is independent of
the Company.
One sample (#54524) was taken from a 1.12 meter channel cut perpendicular across the Goat Vein
outcropping. The second sample (#339807) was taken from two PQ -size drill holes through the
central Deep Trench Vein. Two process options were tested for each sample, one being the
combination of gravity+flotation and the other being whole -ore cyanidation. Ball mill work index
testing was also done on each sample.
Whole-ore cyanidation test samples were ground to a target size P80 105 µm and the
gravity+floatation test samples were ground to two sizes —P80 105 and 150 µm. Results showed
that both test samples responded extremely well to the cyanidation and the gravity+flotation
processes at both grind sizes.
#202, 750 West Pender Street, Vancouver, BC, V6C 2T7
Ph: (604) 685-1144
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Ian Klassen , Grande Portage ’s CEO remarked, “ These metallurgical results a re a very important
development for our project . T he combined gravity & flotation recovery of gold averaging >99%
of the higher -grade and >97% of the lower -grade material and >90% of the silver are an
outstanding feature t o what makes the Herbert look so attractive. These results represent a
significant milestone for the Company in its advancement of the project”.
The qualified person for this news release is Mr. Carl Hale, P.Geo. Mr. Hale is a Qualified Person as
defined by NI 43-101, and is responsible for the technical content of this press release.
About Grande Portage:
Grande Portage Resources Ltd. is a Tier 2 publicly traded mineral exploration company principally
focused on the Herbert Gold Property situated approximately 25 km north of Juneau, Ala ska. The
Company holds a 100% leasehold interest in the Herbert Gold Property, subject to a 5% NSR in
favour of the underlying property owners. The Herbert Gold Property has an amended and restated
NI 43-101 technical report dated July 12, 2018, effectiv e May 28, 2018, completed with an uncut
Indicated Mineral Resource of 1,107,000 tonnes containing 257,950 oz of gold at 7.25 g/t and uncut
Inferred Mineral Resources of 423,200 tonnes containing 82,200 oz of gold at 6.04g/t, each at a 2.5
gpt cut-off. The system is open to length and depth and is host to at least six main composite vein -
fault structures that contain ribbon structure quartz -sulfide veins. The project lies prominently
within the 160km long Juneau Gold Belt, which has produced nearly seven m illion ounces of gold.
The results from the Company’s drilling programs confirm the identification of major elements of a
complex mesothermal gold-quartz system with numerous targets.
ON BEHALF OF THE BOARD
“Ian Klassen”
Ian M. Klassen
President & Chief Executive Officer
NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICE PROVIDER (AS THAT TERM IS
DEFINED UNDER THE POLICIES OF THE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR
ACCURACY OF THIS NEWS RELEASE