Update ON Pilot Plant Operation Progress
142 – 757 West Hastings St. Vancouver, BC V6C 1A1
RAIN CITY (CSE: RAIN): UPDATE ON PILOT PLANT OPERATION PROGRESS
Vancouver, B.C. – May 7 , 2025 ‐ Rain City Resources Inc. (CSE: RAIN) (the “Company” or “Rain”)
announces that the ACCELi Cavitek mineral extraction pilot plant (the “ACCELi Plant”) has been
successfully processing brine on site since April 11. The ACCELi Plant is located at an industrial water
transfer site in Springfield Pennsylvania and represents a pre -commercial trial of the ACCELi technology
with a focus on extracting lithium along with other critical minerals. The ACCELi Plant has been operated
by Avonlea Lithium Corp. (“ALC”) in which Rain has the option to earn a 100% interest.
Fluid from waste-water brine associated with natural gas production from the Marcellus Shale Formation
has been passing through the ACCELi Plant successfully processing Barium, Magnesium, Calcium,
Strontium and Lithium over the last three weeks.
Montrose Environmental Solutions Canada Inc (“Montrose”) have been commissioned to provide an
independent report on the ACCELi process using data from the pilot plant in Pennsylvania. This third-party
assessment will focus on validating operational effic iency, recovery rates and compliance with
environmental standards for commercial scalability.
Rain is conscious of the U.S. Department of Energy's critical material list, which includes lithium, barite and
magnesium, and notes the increasing importance over the short and medium term (2020 to 2035) of lithium
and magnesium, which the ACCELi Plant has been processing in Pennsylvania.
Benjamin Hill, CEO, commented, “The feedback we have received from ALC has been incredibly positive
and the insights learned in scaling up from the successful bench testing in Calgary to The Pilot Plant in
Pennsylvania has been invaluable. We remain focused on establishing the proprietary ACCELi technology
as the default brine -hosted critical mineral extraction process in commercial operation. It provides a low
capex, portable and easily scalable solution with zero water use.
We are grateful for the professionalism of the ALC team on site and we look forward to disseminating the
results following the independent analysis by Montrose.”
About the Marcellus Shale Formation
Pennsylvania’s Marcellus Shale is attracting global attention due to the presence of high concentrations of
lithium and other strategic and critical minerals in wastewater from natural gas production. This geological
formation is composed of sedimentary rock found in the Appalachian Basin of eastern North America at a
depth ranging from about 1,000 feet to 8,000 feet. According to a study from the Department of Energy’s
National Energy Technology Laboratory, this formation could represent enough lithium-rich wastewater to
meet up to 40-percent of the nation’s current domestic lithium consumption.
About Montrose
Montrose is a leading environmental solutions company supporting commercial and governmental
organizations. Montrose Environmental Group Inc comprises over 700 employees in Canada and over 3,400
professionals globally. Montrose has extensive experience in lithium brine resource evaluation and reporting
through its large and experienced hydrogeology and groundwater modelling teams.
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About Us
Rain is an integrated critical mineral technology and project development company committed to solving
the environmental, social, and economic issues associated with extracting lithium and other critical minerals
from brine.
FOR FURTHER INFORMATION CONTACT:
Benjamin Hill David Shaw
Chief Executive Officer Chairperson
RAIN CITY RESOURCES INC.
Website: www.raincityresources.com
Email: [email protected]
Telephone: 778-819-3792
Cautionary Statement Regarding Forward-Looking Information
This news release may include certain "forward -looking statements" under applicable Canadian securities
legislation. There can be no assurance that such statements will prove to be accurate, as actual results and
future events could differ materially from those anticipated in such statements. Accordingly, readers should
not place undue reliance on forward-looking statements. Rain disclaims any intention or obligation to update
or revise any forward- looking statements, whether as a result of new information, future events or otherwise,
except as required by law. There can be no assurance that proposed operations will be successful or that the
anticipated financial, economic or strategic benefits will be realized.
Neither the Canadian Securities Exchange nor its Regulation Service Provider (as the term is defined in the
policies of the Canadian Securities Exchange) accepts responsibility for the adequacy of accuracy of this
news release.