Exciting new Targets at Sierra's Betty East Property

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For Immediate Release

Soil Geochemistry Results Highlight Exciting New

Targets at Sierra’s Betty East Property; Western Nevada

Surrey, British Columbia, September 13 , 2021, Sierra G rande Minerals Inc. (the “Company”

or “ Sierra”) (CSE: SGRO) (OTCQB: SIERF) (F SE: F91Q) is pleased to announce that it has

received the results for its previously announced soil geochemical programs at its Betty East

prospect in Western Nevada. Betty East lies near the southern end of the Manhattan Mining

District, immediately north of Huntsman Exploration ’s Baxter Springs project and less than

20km south along trend from Kinross Gold’s tier 1 Round Mountain mine (see Figure 1).

Program Summary

A total of 1,805 soil geochemical samples were collected at the Company’s four west-

central Nevada properties, Glitra, Sat, Betty East, and B&C Springs, which are located in the

northern part of the Walker Lane trend. The aim of the recently completed work was to

provide complete soil geochemical coverage via wide-spaced sampling (50 to 100 metres

between samples along lines separated by 100 to 200 metres). The lines were oriented to

cross known mineralized and/or altered trends at high angles, and prelimin ary analyses for

gold pathfinder elements (e.g., As and Sb) along with base metals (e.g., Cu, Pb, Zn) were

obtained through use of a portable XRF (pXRF) instrument while field work was underway .

Further details regarding the location, access, infrastructure, previous work and geologic

characteristics, along with results of due diligence rock geochemical sampling from all of

the properties were given in the Company’s news release dated April 13, 2021.

Highlighted Results at Betty East

• Two prospective trends are apparent in the soil geochemical data. One, known as “The

Knolls,” trends northerly, has been explored previously and displays a pronounced

epithermal Au-As-(Ag-Hg). The other is a newly-emerging and more extensive trend . It

trends east-northeastward from the Knolls and displays an Ag -As-Sb-Hg-Mo (Zn-Cu-W)

signature (see figure 2, 3 and 4).

 The Knolls trend has l ocally very high gold-in-soil results, including values of 6270,

5060, 1185 and 690 ppb gold, within an envelope of anomalous gold and arsenic-

in-soils (see Figures 2 and 4).

 The newly emerging east-northeast trend is extensive (>1.5km long by up to 1km

wide) and displays elements of both epithermal and intrusive -related signature,

with highly anomalous As-Hg-Ag-Sb-Mo, along with locally elevated gold and

consistently elevated Zn- Cu-W. This trend appears to link up with the Knolls

anomaly in the southwest part of the property.

 An additional 12 claims were staked by Sierra along this east- northeast trend,

increasing the size of the Betty East Property package to 653 acres.

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Sierra’s President and CEO, Sonny Janda, commented, “The results of our soil geochemical

program at Betty East are very encouraging and confirm the existence of gold -bearing

structures at the Knolls prospect. Perhaps most intriguing, however, is the broad, apparently

east-northeast trending multi-element soil geochemical anomaly to the northeast of th e

Knolls. We are excited to further investigate and evaluate this area in the coming months.”

Next Steps for Betty East

The nature and full extent of the broad multi-element soil geochemical anomaly northeast

of the Knolls will be a focus for the Company in the coming months, initially through

mapping, prospecting, rock sampling and possibly further soil geochemical sampling. Plans

for the Knolls area include an Induced Polarization (IP) survey, and a number of

reconnaissance IP lines may also be run across the anomaly to the northeast. A property -

scale airborne magnetometer survey is also being considered.

Figure 1. Regional Setting for the Betty Springs property plan

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Figure 2. Gold-in-soil results for the Betty Springs property.

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Figure 3. Silver-in-soil results for the Betty Springs property.

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Figure 4. Arsenic-in-soil results for the Betty Springs property.

Technical data pertaining to this new release was reviewed and approved by Charles J.

“Charlie” Greig, MSc., P. Geo., a qualified person under National Instrument 43-101.

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ON BEHALF OF THE BOARD

“Jared Scharf”

_________________________

Jared Scharf, Director

For further information on the Company, please contact Sonny Janda, Director, Telephone:

604-357-3741 or at [email protected]

Neither the Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this

release.

This news release includes certain statements that constitute “forward-looking information” within the meaning

of applicable securities law, including without limitation, statements that address the timing and content of

certain agreements and development. Forward-looking statements address future events and conditio ns and

are necessarily based upon a number of estimates and assumptions. While such estimates and assumptions are

considered reasonable by the management of the Company, they are inherently subject to significant business,

economic, competitive and regulatory uncertainties and risks, including the ability of the Company to raise the

funds necessary to fund its projects and, accordingly, may not occur as described herein or at all. Actual results

may differ materially from those currently anticipated in such statements. Factors that could cause actual results

to differ materially from those in forward looking statements include Covid -19 restrictions, market prices,

exploitation and exploration successes, the timing and receipt of government and regulatory approvals, and

continued availability of capital and financing and general economic, market or business conditions. Readers

are referred to the Company’s filings with the Canadian securities regulators for information on these and other

risk factors, avai lable at www.sedar.com. Investors are cautioned that forward -looking statements are not

guarantees of future performance or events and, accordingly are cautioned not to put undue reliance on

forward-looking statements due to the inherent uncertainty of such statements. The forward-looking statements

included in this news release are made as of the date hereof and the Company disclaims any intention or

obligation to update or revise any forward -looking statements, whether as a result of new information, fut ure

events or otherwise, except as expressly required by applicable securities legislation.”