Midnight Sun Signs USD$51 Million Earn-IN Agreement with RIO Tinto

MIDNIGHT SUN SIGNS USD$51 MILLION EARN-IN AGREEMENT WITH RIO TINTO

Vancouver, British Columbia, April 27, 2020 -- Midnight Sun Mining Corp. (the "Company" or

"Midnight Sun") (TSX -V: MMA) is pleased to report the Company has entered into an earn -in

and joint venture a greement with Rio Tinto Mining and Exploration Limited (“Rio Tinto”) in

which Rio Tinto can earn up to a 75% interest in the Solwezi Licences.

The Solwezi Licences are com prised of two individual exploration licences totalling 506 square

kilometres, situated in the North -Western Province of Zambia, adjacent to First Quantum’s

Kansanshi Mine; Africa's largest copper mining complex, on the prolific Zambia -Congo Copper

Belt.

Summarized Terms of the Agreement

 Initial Cash Payment: A cash payment in the amount of USD$700,000 will become

payable by Rio Tinto to Midnight Sun upon removal of conditions.

 Initial Work Program: Rio Tinto can fund an initial work program on the Solwezi Licenses

by spending USD$3,000,000 , of which US D$2,000,000 is a firm commitment, within the

next two field season. After completing the firm commitment, a further USD$300,000

will become payable by Rio Tinto to Midnight Sun before Rio Tinto proceeds with the

additional expenditures.

 Stage 1: After completing the Initial Work Program, Rio Tinto can earn 51% ownership of

the Solwezi Licenses by incurring a further USD$16,000,000 in work expenditures within

four years and making a total of USD$1,000,000 in additional scheduled cash payments

to Midnight Sun.

 Stage 2: Rio Tinto can earn an additi onal 14% ownership of the Licenc es by incurring a

further USD$14,000,000 in work expenditures or completing a Feasibility Study within

three years of starting Sta ge 2 and making an additional USD$1,000,000 cash payment

to Midnight Sun.

 Stage 3: Rio Tinto can earn an additi onal 10% ownership of the Licenc es by incurring a

further USD$15,000,000 in work expenditures within two years.

“I am excited to be partnering wi th one of the preeminent leaders in the mining industry”

stated the Company’s Acting CEO, Al Fabbro. “Rio Tinto’s enthusiasm towards the Solwezi

Licences reflects my own. Their expertise combined with their aggressive exploration plans are

precisely what I want to see for this project.”

The earn-in and joint venture agreement remains subject to TSX Venture Exchange approval as

well as customary conditions and contains representations, warranties, covenants and

indemnities as are typical for agreements of this nature.

ON BEHALF OF THE BOARD OF MIDNIGHT SUN MINING CORP.

Al Fabbro – Lead Director & Acting Chief Executive Officer

For Further Information Contact:

Al Fabbro

Lead Director

Tel: +1 604 351 8850

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULAT ION SERVICES PROVIDER (AS THAT

TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY

FOR THE ADEQUACY OR ACCURACY OF THIS NEW 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 st atements 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 from those in forward -looking statements i nclude, 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. Acco rdingly, the actual events may differ materially from those

projected in the forward -looking statements. This list is not exhaustive of the factors 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.