Summa Silver Drills 11,992 g/t Silver Equivalent over 0.9 m Within 4,408 g/t Silver Equivalent over 2.8 m at the Hughes Property, Tonopah

Drilling Intersects Bonanza Grade Silver and Gold with Stacked Veins and Broad Mineralized Zones Identified

Vancouver, July 21, 2021 - Summa Silver Corp. (TSXV: SSVR) (OTCQB: SSVRF) (FSE:48X) ("Summa" or the "Company") is pleased to announce the discovery of additional high-grade silver and gold mineralization in the first two holes of the year at the Hughes Property near Tonopah, Nevada.


Key Highlights - Rescue Veins at the Belmont Mine

- 11,992 g/t silver equivalent (5,969 g/t Ag and 60.2 g/t Au) over 0.9 m from 432.1 m within

- 4,408 g/t silver equivalent (2,252 g/t Ag and 21.6 g/t Au) over 2.8 m from 430.6 m in SUM21-30

- 525 g/t silver equivalent (269 g/t Ag and 2.56 g/t Au) over 1.2 m from 413.3 m within

- 155 g/t silver equivalent (79 g/t Ag and 0.76 g/t Au) over 15.1 m from 397.4 m in SUM21-32

- Expanding High Grade Shoots: Drilling to date has demonstrated strong continuity of high-grade mineralization in the Rescue vein system where 8 holes have now been completed and grades often exceed 2,000 g/t AgEq (see attached figures).

- Stacked Veins Identified: Drilling in 2021 has so far confirmed the presence of several stacked mineralized veins within the southern portions of the Belmont Mine currently referred to as the Rescue vein system.

Note: AgEq based on 100(Ag):1(Au), true widths are unknown


Galen McNamara, CEO, stated: "Hole SUM21-30 ranks very favourably with the best holes drilled globally on any silver-focused project in recent memory. It is also important to note that it is only the 30th hole drilled on the project to date. In the bigger picture, the discovery of grades well over 10,000 g/t silver equivalent at Hughes is an exciting new development for the Tonopah Mining District. Drilling will continue for the remainder of 2021 as we drive towards unlocking the full potential of this classic American mining district. We continue to be well funded for this objective with over $9.5 million in working capital."


Table 1: Assay Results

Drill Hole 	From (m) 	To (m) 	Length (m) 	Au (g/t) 	Ag (g/t) 	AgEq* (g/t)
SUM21-30	430.6	433.4	2.8	21.6	2,252	4,408
including	432.1	433.0	0.9	60.2	5,969	11,992
SUM21-32	342.9	345.9	3.0	0.99	142	241
including	344.8	345.9	1.1	2.07	276	483
SUM21-32	397.4	412.5	15.1	0.76	79	155
including	413.3	412.5	1.2	2.56	269	525
SUM21-32	420.9	421.4	0.5	1.08	64	172
SUM21-32	427.3	428	0.7	0.63	54	117
SUM21-32	429.1	429.6	0.5	0.44	57	101
SUM21-32	452.3	452.7	0.4	0.62	72	134

*AgEq based on 100 (Ag):1 (Au), True widths are not yet known, Reported intervals are based on a 100g/t AgEq cut-off grade. Metal recoveries are assumed to be 100%.

Figure 1
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Figure 2
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Drill Program

The 2021 drill program was initially designed to test the lateral and vertical extent of structurally controlled, epithermal-related, high-grade silver and gold mineralization discovered during the 2020 drill program. Based on an updated synthesis of all 2020 drill data, multiple priority drill targets were defined.

One of the first targets tested in 2021 was the Rescue vein system (SUM21-030 and 032; Table 1), part of the Belmont Mine target area. Six holes were drilled at Rescue in 2020 and intersected numerous intervals of high-grade mineralization over a strike length of 360 metres (Figure 2).

Hole SUM21-30 tested the up-dip continuity of mineralization near SUM21-20 (6,220 g/t AgEQ over 0.7 metres within 3,182 g/t AgEq over 1.4 metres; see news release dated December 17th, 2020) and hit the highest grade intersection to date on the property; 11,992 g/t AgEq over 0.9 m within 4,408 g/t AgEq over 2.8 m from 430.6 m. This interval demonstrates the significant high-grade potential of this target within the Rescue vein system and together with results from 2020, represents a priority area for further drilling.

Hole SUM21-032 was a 50 metre step-out along the vein from hole SUM20-06 and intersected a broad alteration zone that returned 155 g/t AgEq over 15.1 metres including 525 g/t AgEq over 1.2 metres from 397.4 m. Defining the strike-extent of this broad zone of continuous silver mineralization, with local high-grade intervals (e.g., SUM20-06; 596 g/t AgEq over 18.5 metres including 3,760 g/t AgEq over 2.5 metres; see news release dated September 30th, 2020) is considered a priority for future drilling.

In both holes the high-grade intercepts comprised silver-sulfosalt bearing, banded to brecciated quartz ± adularia veins with associated argillic alteration halos. The south-west striking, structurally-controlled veins are hosted in intermediate to felsic volcanic and volcaniclastic rocks of the Mizpah Formation. Assays are pending from three additional holes drilled into the Rescue vein system, with more holes currently being planned.


Table 2: Drillhole Information

Drill Hole 	Easting 	Northing 	Azimuth 	Dip 	Pre-Collar Depth (RC) 	Final Depth (Core)
SUM21-30	481054	4213620	139	-60	122	522
SUM21-32	481054	4213620	158	-54	122	531

Coordinates are NAD27, Zone 11N.


Analytical and QA/QC Procedures

All samples were sent to Paragon Geochemical Laboratories in Sparks, Nevada for preparation and analysis. Paragon meets all requirements of the International Accreditation Service AC89 and demonstrates compliance with ISO/IEC Standard 17025:2017 for analytical procedures. Samples were analyzed for gold via fire assay with an AA finish ("Au-AA30") and silver via atomic emission spectroscopy after four-acid digestion ("AgMA-AAS"). Samples that assayed over 5 ppm Au were re-run via fire assay with a gravimetric finish ("Au-GR30"). Samples that assayed over 200 ppm Ag were re-run via fire assay for Ag with a gravimetric finish ("Ag-GRAA30"). In addition to Paragon quality assurance / quality control ("QA/QC") protocols, Summa Silver implements an internal QA/QC program that includes the insertion of sample blanks, duplicates and certified reference materials at systematic and random points in the sample stream.


Qualified Person

The technical content of this news release has been reviewed and approved by Galen McNamara, P. Geo., the CEO of the Company and a qualified person as defined by National Instrument 43-101.


About Summa Silver Corp

Summa Silver Corp is a Canadian junior mineral exploration company. The Company has options to earn 100% interests in the Hughes property located in central Nevada and 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 mine has remained inactive since commercial production ceased in 1929 due to heavily depressed metal prices and little to no modern exploration work has ever been completed.

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



Summa Silver Corp.
info@summasilver.com
www.summasilver.com

Investor Relations Contact:
Kin Communications
Nima Shafigh
604-684-6730
SSVR@kincommunications.com



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