Summa Silver Resumes Drilling at the High-Grade Mogollon Silver Project, New Mexico

September 28, 2022 at 07:35 AM EDT

Multiple Holes Planned to Test Vein with Known High-Grade Mineralization

Vancouver, British Columbia--(Newsfile Corp. - September 28, 2022) - Summa Silver Corp. (TSXV: SSVR) (OTCQX: SSVRF) (FSE:48X) ("Summa" or the "Company") is pleased to announce that it has resumed exploration drilling at its high-grade Mogollon silver project near Silver City, New Mexico.

Key Highlights:

There's Unfinished Business at the Consolidated Mine: Exploration drilling has resumed around the historic Consolidated Mine, where mining was halted prematurely in 1942 by order of the federal government at the onset of World War II.
There Are Important Unexplored Areas: The Consolidated Mine target represents only 1% of the total vein and structure strike length present on the project, which features numerous poorly explored to completely unexplored targets (see attached figures).
We Have a Fully Funded Program: A minimum of 11 holes and maximum of 25 holes will be drilled to test an area of 500m along strike by 350m up- and down-dip at a spacing between holes projected to support a potential mineral resource.
Our Initial Results Are Significant: All 6 holes drilled to date by Summa Silver around the Consolidated Mine have intersected high-grade silver-gold mineralization. Highlights include:

31.0 m at 448 g/t Ag equivalent* (129 g/t Ag, 3.88 g/t Au) in MOG22-05¹
11.6 m at 429 g/t Ag equivalent* (220 g/t Ag, 2.70 g/t Au) in MOG21-04²

The Limits of Mineralization Are Not Defined: The broad zone of mineralization at Consolidated is open in all directions. Drilling will continue to step-out to fully evaluate the size potential of the target area.

* Silver equivalent is calculated using US$20/oz Ag, US$1,800/oz Au, with metallurgical recoveries of Ag - 90% and Au - 95%. AgEq = (Ag grade x Ag recovery)+((Au grade x Au recovery) x (Au price / Ag price)). True widths are not yet known. 1. Reported May 3rd, 2022, 2. Reported March 3rd, 2022

Galen McNamara, CEO, stated: "The Mogollon project continues to represent a rare American discovery opportunity that we are well positioned to systematically advance. Our work utilizes a modern best practice approach with key pillars that focus on environmental stewardship, community engagement and successful exploration. The team is very much looking forward to following up on the drilling already completed and to aggressively pursuing the growth of the mineralized zone around the Consolidated Mine."

Figure 1: Mogollon Project target area and veins

To view an enhanced version of Figure 1, please visit:
https://images.newsfilecorp.com/files/7983/138596_43b757e044413893_002full.jpg

Figure 2: Consolidated Extension Drilling Area

To view an enhanced version of Figure 2, please visit:
https://images.newsfilecorp.com/files/7983/138596_43b757e044413893_003full.jpg

Drill Program

The Mogollon drill program is designed to test for un-mined extensions of the Consolidated Mine along-strike and down-dip centered on the north-striking Queen Vein. Results from the first 6 holes drilled by the Company have been reported (see March 3^rd and May 3^rd, 2022 news releases). All six holes intersected broad zones of epithermal-related alteration, veining and brecciation with locally strong concentrations of silver-gold-bearing sulfide mineralization. Assay highlights from the first phase of drilling include 11.6 m at 429 g/t silver equivalent (220 g/t Ag, 2.70 g/t Au) in MOG22-04, located south of the Consolidated Mine and 31.0 m at 448 g/t silver equivalent (129 g/t Ag, 3.88 g/t Au) in MOG22-05 located north of the Consolidated Mine.

The first is a step-out near MOG22-05. Subsequent holes will be systematic 50 to 100 m step-outs within a broader 500 x 350 m area along-strike and below the Consolidated Mine (Figures 2 and 3). This target area only represents less than 1% of the total prospective vein and structure length on the property. All other prospective areas, including projected vein extensions on the newly acquired claims, remain largely under-explored.

Figure 3: Consolidated Extension Longsection

To view an enhanced version of Figure 3, please visit:
https://images.newsfilecorp.com/files/7983/138596_43b757e044413893_004full.jpg

About Summa Silver Corp

Summa is a Canadian junior mineral exploration company. The Company owns a 100% interest in the Hughes property located in central Nevada and has an option to earn 100% interest in the Mogollon property located in southwestern New Mexico. The Hughes property is host to the high-grade past-producing Belmont Mine, one of the most prolific silver producers in the United States between 1903 and 1929. The Mogollon property is the largest historic silver producer in New Mexico. Both properties have remained inactive since commercial production ceased and neither have seen modern exploration prior to the Company's involvement.

Follow Summa Silver on Twitter: @summasilver

LinkedIn: https://www.linkedin.com/company/summa-silver-corp/

ON BEHALF OF THE BOARD OF DIRECTORS

"Galen McNamara"
Galen McNamara, Chief Executive Officer
info@summasilver.com
www.summasilver.com

Investor Relations Contact:
giordy@summasilver.com
(604)288-8004

Forward-Looking Statements

This news release contains certain statements that may constitute forward-looking information under applicable securities laws. All statements, other than those of historical fact, which address activities, events, outcomes, results, developments, performance or achievements that Summa anticipates or expects may or will occur in the future (in whole or in part) should be considered forward-looking information. Such information may involve, but is not limited to, statements with respect to the exploration and development of the Company’s mineral projects. Often, but not always, forward-looking information can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or variations (including negative variations) of such words and phrases, or statements formed in the future tense or indicating that certain actions, events or results "may", "could", "would", "might" or "will" (or other variations of the forgoing) be taken, occur, be achieved, or come to pass. Forward-looking information is based on currently available competitive, financial and economic data and operating plans, strategies or beliefs as of the date of this news release, but involve known and unknown risks, uncertainties, assumptions and other factors that may cause the actual results, performance or achievements of Summa to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors may be based on information currently available to Summa, including information obtained from third-party industry analysts and other third-party sources, and are based on management's current expectations or beliefs regarding future growth, results of operations, future capital (including the amount, nature and sources of funding thereof) and expenditures. Any and all forward-looking information contained in this press release is expressly qualified by this cautionary statement. Trading in the securities of Summa should be considered highly speculative.

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 release.

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To view the source version of this press release, please visit https://www.newsfilecorp.com/release/138596

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Summa Silver Resumes Drilling at the High-Grade Mogollon Silver Project, New Mexico

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