MacDonald Mines Commences Sonic Drill Program of Oxide Sands at its Wawa-Holdsworth Gold Project

Toronto, Ontario – September 20, 2017 - MacDonald Mines Exploration Ltd. (TSX-V: BMK) ("MacDonald Mines", the "Company", or “BMK”) announces that it has initiated an approximate 2000 metres sonic drilling program of the Oxide Sands at its Wawa-Holdsworth Gold Project.

Quentin Yarie, President and Chief Executive Officer of MacDonald Mines stated, "Our exploration program to date has shown that the precious metal content and extent of the Oxide Sands is larger than historically identified. Our on-going trenching program is defining the lateral extent of the Sand. This drilling campaign will enable us to assess the vertical distribution of the precious metals within the Sands as we continue to work towards developing a resource.”

Sonic drilling, as opposed to conventional diamond drilling, has been optimized for unconsolidated material such as the Oxide Sands. Sonic drilling uses high-frequency mechanical vibration to penetrate the unconsolidated material and recover core samples that are more comprehensive than what is usually possible with this type of material. 

Wawa-Holdsworth Project Overview

Neighbouring Richmont's Island Gold Mine, Argonaut's Magino Gold Project and Goldcorp’s Borden project, the 1142 acres Wawa-Holdsworth Gold Project is located 20km northeast of Wawa, Ontario. The land package has all the attributes to host a large gold system with numerous gold showings occurring in a 500m-wide deformation corridor. Historic work by previous operators defined three gold targets on the Wawa-Holdsworth Project: 1) Greenstone-hosted quartz-carbonate vein deposits (Soocana Vein System and Reed-Booth Showing); 2) BIF-hosted gold deposits (gold-bearing pyrite zones in an Algoma-type iron formation); and 3) Gold-bearing Oxide Sands developed from the weathering of the auriferous Pyrite Zones.

A recent EM Max-Min survey confirmed that the sands extend at least 1.8km along strike and reach depths beyond 8m. MacDonald’s current trenching and sampling program returned up to 6.45 g/t gold (TR775-0), up to 52.7g/t silver (TR750-6) and is also expanding the lateral extents of the “black sands” with the discovery of new precious metals (gold and silver) horizons within the soil profile. This indicates that the gold and silver inventory of the Oxide Sands at the Wawa-Holdsworth Project may be larger than initially anticipated.

Preliminary metallurgical test work showed that conventional flotation techniques can be used to concentrate the precious metals in the sands. 

Qualified Person

Quentin Yarie, P Geo. is the qualified person responsible for preparing, supervising and approving the scientific and technical content of this news release.

About MacDonald Mines Exploration Ltd.

MacDonald Mines Exploration Ltd. is a mineral exploration company headquartered in Toronto, Ontario focused on gold exploration in Canada.  The Company has built a portfolio of safe-jurisdiction, infrastructure-rich projects that demonstrate the greatest market potential for return. The Company is aggressively advancing its highly prospective Wawa-Holdsworth Project.

The Company's common shares trade on the TSX Venture Exchange under the symbol "BMK".

To learn more about MacDonald Mines, please visit www.macdonaldmines.com 

For more information, please contact:

Quentin Yarie, President & CEO, (416) 364-4986, This email address is being protected from spambots. You need JavaScript enabled to view it.

Or Mia Boiridy, Investor Relations, (416) 364-4986, This email address is being protected from spambots. You need JavaScript enabled to view it.

Cautionary Statement:

Neither 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 release.

No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein. The foregoing information may contain forward-looking statements relating to the future performance of the Company. Forward-looking statements, specifically those concerning future performance, are subject to certain risks and uncertainties, and actual results may differ materially from the Company’s plans and expectations. These plans, expectations, risks and uncertainties are detailed herein and from time to time in the filings made by the Company with the TSX Venture Exchange and securities regulators. MacDonald Mines does not assume any obligation to update or revise its forward-looking statements, whether as a result of new information, future events or otherwise.