Exploits Discovery Corp. — Audit Report / Information 2020

Feb 6, 2020

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To Alberta Securities Commission British Columbia Securities Commission Ontario Securities Commission

Grant Thornton LLP 1701 Scotia Place 2 10060 Jasper Avenue NW Edmonton, AB T5J 3R8 T +1 780 422 7114 F +1 780 426 3208

and Mariner Resources Corp. Dale Matheson Carr-Hilton Labonte LLP, Chartered Accountants

February 4, 2020

Dear Sirs/Mesdames:

Re: Mariner Resources Corp. Change of Auditors Notice Pursuant to Part 4.11 of National Instrument 51-102

As required by Section 4.11 of National Instrument 51-102: Continuous Disclosure Obligations , we have read the Notice of Change of Auditors (the “Notice”) for Mariner Resources Corp. dated January 14, 2020. We agree with each statement contained in the Notice that relate to us and we have no basis to disagree with the statements contained in the Notice that relate to Grant Thornton LLP, Chartered Professional Accountants.

Yours truly, Grant Thornton LLP

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Audit • Tax • Advisory Grant Thornton LLP. A Canadian Member of Grant Thornton International Ltd