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Sienna Almost Doubles Acreage of Stonesthrow Gold Project in Saskatchewan Bordering Ramp Metals Inc

Mergers & Acquisitions

Sienna Almost Doubles Acreage of

Stonesthrow Gold Project in Saskatchewan

Bordering Ramp Metals Inc

Vancouver, British Columbia--(Newsfile Corp. - September 4, 2024) - Sienna Resources Inc. (TSXV:

SIE) (OTC Pink: SNNAF) (FSE: A1XCQ0) ("Sienna" or the "Company") is pleased to announce that it

has significantly increased its acreage on the Stonesthrow Gold Project in Saskatchewan now

consisting of approximately 31,718 contiguous acres prospective for gold directly bordering Ramp

Metals Inc (RAMP).

Ramp announced (June 17, 2024) multiple zones of gold mineralization, including

73.55 grams per tonne gold and 19.50 grams per tonne silver. Ramp has just announced a strategic

investment led by Eric Sprott.

Sienna Resources' management cautions that past results or discoveries

on properties in proximity to Sienna Resources may not necessarily be indicative of the presence of

mineralization on the company's properties.

Jason Gigliotti, President of Sienna Resources Inc. stated, "We are very pleased to significantly

increase our acreage directly bordering Ramp Minerals Inc in Saskatchewan.

Sienna is now one of the

larger landholders in this exciting new mining camp and with Eric Sprott taking a major stake in the area

it shows the promise of this new potentially world-class mining district.

Sienna management is currently

developing plans to move forward on this large sized new gold project at a time when gold is at all-time

highs.

Sienna has recently extended its Dragon Uranium Project bordering Cameco in the Athabasca

Basin as well.

Management is constantly looking at ways to maximize shareholder value.

Sienna is

coming into a very active period and management is very optimistic about the short and long term growth

drivers in place now."

Sienna Resources ownership map

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/854/222073_12f4f65b148d18c1_002full.jpg

Recently, (May 23, 2024) Sienna acquired Case Lake West Cesium and Spodumene Pegmatite Project

in the Larder Lake Mining division of Ontario, Canada, roughly 100 km north of Kirkland Lake, NE

Ontario.

This project consists of approximately 2,200 contiguous acres prospective for Cesium and

Spodumene Pegmatites directly bordering Power Metals Corp's Case Lake cesium and pegmatite

swarm discovery. On May 22, 2024 Power Metals announced "WORLD-CLASS CESIUM RESULTS

UP TO 18.13% AT CASE LAKE."

This was very exciting news regarding this growing cesium district.

Sienna management cautions that past results or discoveries on properties in proximity to Sienna may

not necessarily be indicative of the presence of mineralization on the company's properties.

About Sienna Resources Inc.

Sienna has significantly increased acreage of the "Stonesthrow Gold Project", consisting now of

approximately 31,718 contiguous acres prospective for gold.

Sienna has also recently acquired the

"Case Lake West Cesium and Spodumene Pegmatite Project" in Larder Lake Mining division of

Ontario, Canada roughly 100 km north of Kirkland Lake, NE Ontario.

This project consists of

approximately 2,200 contiguous acres prospective for Cesium and Spodumene Pegmatites.

Sienna has

also just acquired the 10,357

acre "Uranium Town Project" bordering Denison Mines Corporation,

the

now 23,134 contiguous acre "Dragon Uranium Project" bordering Cameco Corporation and the 55,440

acre "Atomic Uranium Project" in the world renowned Athabasca Basin of Saskatchewan.

Also, Sienna

recently expanded the "Elko Lithium Project" in Elko County, Nevada.

This project consists of

approximately 1840 contiguous acres directly bordering Surge Battery Metals' "Nevada North Lithium

Project" in Elko County, Nevada who announced the highest grade lithium deposit in the USA.

Sienna is

also one of the larger landholders in Clayton Valley Nevada. Sienna's Clayton Valley projects include the

Blue Clay Lithium Project, the Silver Peak South Project, and the Clayton Valley Deep Basin Lithium

Project. Clayton Valley is home to the only lithium production in North America, being Albemarle Corp's

Silver Peak deposit.

This project is also near Tesla Motors Inc.'s Gigafactory in Nevada. On March 18,

2021, Schlumberger New Energy Venture announced the development of a lithium extraction pilot plant

through its new venture, NeoLith Energy in a strategic partnership with Pure Energy. The deployment of

the pilot plant will be in Clayton Valley, Nevada, USA. The NeoLith Energy sustainable approach uses a

differentiated direct lithium extraction (DLE) process to enable the production of high-purity, battery-

grade lithium material while reducing the production time from over a year to weeks. Results from this

pilot plant are expected in 2024 and could have a significant impact on the brine prospects within

Clayton Valley Nevada as Sienna is located in the deepest section of this brine deposit.

This new acreage was acquired via staking.

Qualified Person:

Mr. Frank Bain, PGeo, a qualified person as defined by National Instrument 43-101 has reviewed and

approved the scientific and technical disclosure contained within this news release.

If you would like to be added to Sienna's email list, please email

[email protected]

for

information or join our Twitter account at

@SiennaResources

.

Contact Information

Tel:

1.604.646.6900

Fax: 1.604.689.1733

www.siennaresources.com

[email protected]

"Jason Gigliotti"

President, Director

Sienna Resources Inc.

Statements in this news release that are not historical facts are forward-looking statements.

Forward-

looking statements are statements that are not historical, and consist primarily of projections -

statements regarding future plans, expectations and developments.

Words such as "expects",

"intends", "plans", "may", "could", "potential", "should", "anticipates", "likely", "believes" and words of

similar import tend to identify forward-looking statements.

Forward-looking statements in this news

release include uncertainty of exploration and development plans regarding the property; commodity

price fluctuations; political or economic instability and regulatory changes; currency fluctuations, the

state of the capital markets; uncertainty in the measurement of mineral reserves and resource

estimates; the Company's ability to attract and retain qualified personnel and management; potential

labour unrest; reclamation and closure requirements for mineral properties and the availability of

capital to fund the Company's projects, as well as other risks and uncertainties identified under the

heading "Risk Factors" in the Company's continuous disclosure documents filed on SEDAR.

You are

cautioned that the foregoing list is not exhaustive of all factors and assumptions which may have been

used.

The Company cannot assure you that actual events, performance or results will be consistent

with these forward-looking statements, and management's assumptions may prove to be incorrect.

These forward-looking statements reflect current expectations regarding future events and operating

performance and speak only as of the date hereof and the Company does not assume any obligation

to update forward-looking statements if circumstances or management's beliefs, expectations or

opinions should change other than as required by applicable law. For the reasons set forth above, you

should not place undue reliance on forward-looking statements.

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

press release.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/222073