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MMA.V ·

Midnight Sun Commences Drilling the Mitu Copper-Cobalt Discovery

Exploration Programs

Midnight Sun Commences Drilling the Mitu Copper-Cobalt Discovery

Vancouver, British Columbia, May 3, 2017 - Midnight Sun Mining Corp. (the "Company" or "Midnig ht

Sun") (TSX-V: MMA) is pleased to announce the commencement of drilling on the Mitu copper -cobalt

discovery on the Company’s optioned Solwezi properties. The Company has contracted Blu Rock Mining

Services Ltd. to conduct a diamond drilling program intended to further expand and define the extent of

the previously announced ore-shale type copper-cobalt discovery (see news release dated January 12,

2017).

A geophysical s urvey on Mitu , including 37 line-kilometers of natural source audio magneto tellurics

(“NSAMT”) conducted by the Company, indicates a very large ‘banana’ shaped anomaly running south of

the initial discovery area on the western flank of the Solwezi D ome. This favourable contact zone along

the western flank of the Solwez i Dome extends for over 17 kilometers on the Company's optioned

properties.

Midnight Sun is currently conducting air core drilling to confirm the presence of th e ore -shale unit

closest to surface as indicated by the NSAMT survey . To date, t his shallow drilling ( approximately 60

meters in depth) supports the NSAMT interpretation which indicates the ore -shale potentially

continuing along the full 17 km contact zone. The goal of the diamond drilling is to test the dip extent of

the ore-shale, which is estimated by the NSAMT survey to be 3 to 4 kilometers at a 20 degree angle from

surface.

NSAMT surveys are used extensively in the Zambia/Congo Copperbelt with known efficacy in identifying

the blanket style deposition of ore -shale mineralization. Ore-shale mineralization is the dominant form

of coppe r-cobalt deposition in the Zambia/ Congo Copperbelt, the largest single copper -cobalt

production area in the world . Mineralization is associated with shale units whi ch form chemical and

physical ‘traps’ for base metals at or near the contact between the Upper and Lower Roan units.

The sedimentary nature of these ore-shale deposits le nds themselves to the potential for both high

grade as well as very large tonnage. Examples of this type of deposition in Zambia include t he Sentinel

mine, owned by First Quantum Minerals Ltd. (“First Quantum”) , which has a measured and indicated

resource of o ver one billion tonnes of copper 1, and the Nkana copper-cobalt mine, jointly owned by

Glencore International AG, First Quantum , and ZCCM Investment Holdings Plc , which has been in

1 First Quantum website. Available at http://www.first-quantum.com/Our-Business/Development-

Projects/Trident/Sentinel/Reserves-and-Resources/default.aspx

production since 1932 and still contains a measured and indicated resource of 211,300,000 tonnes of

copper and cobalt.2

“We are at a transformative time for the Company“ said Robert Sibthorpe, President “This drill program

at the Mitu area should give us the big picture - whether Mitu has the strike and dip extent to

potentially develop into a world-class deposit.“

While Mitu is the most advanced of the Company's Solwezi property targets, the earlier stage Dumbwa

and 22 Zone areas remain highly prospective.

Qualified Person : Richard Mazur, P.Geo., a Qualified Person under NI 43 -101, has reviewed and

approved the technical data and contents of this release. Mr. Mazur is a Director of the Company and,

as such, is not independent.

Stock Option Expiration : 525,000 previously issued stock options at a strike price of $0.25 are set to

expire on May 31, 2017. The Company expects these options will be exercised prior to expiration.

ON BEHALF OF THE BOARD

Robert Sibthorpe B.Sc.(Geology), M.B.A.

President & CEO

For Further Information Contact:

Al Fabbro

Director

Tel: 604-351-8850

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS

DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE

ADEQUACY OR ACCURACY OF THIS NEWS RELEASE.

This news release includes certain statements that may be deemed "forward-looking statements." All statements in

this release, other than statements of historical facts, are forward -looking statements. Although the Company

believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such

statements are not guarantees of future performance and actual results or developments may differ materially

from those in the forward -looking statements. Factors that could cause actual results to differ materially fr om

those in forward -looking statements include, changes in market conditions, unsuccessful exploration results,

changes in commodity prices , unanticipated changes in key management personnel and general economic

conditions. Mining exploration and development is an inherently risky business. Accordingly, the actual events may

differ materially from those projected in the forward -looking statements. This list is not exhaustive of the factors

2 Glencore Resources and Reserves as at 31 December 2016. Available at

http://www.glencore.com/investors/reports-and-results/reserves-and-resources/

that may affect any of the Company's forward -looking statements. These and other factors should be considered

carefully and readers should not place undue reliance on the Company's forward-looking statements. The Company

does not undertake to update any forward-looking statement that may be made from time to time by the Company

or on its behalf, except in accordance with applicable securities laws.