Indicate by check mark whether the registrant
files or will file annual reports under cover of Form 20-F or Form 40-F.
Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Exhibit 99.1
First Mining Receives Federal Approval for the
Springpole Gold Project Environmental Assessment
VANCOUVER, BC, June 30, 2026 /CNW/ - First Mining
Gold Corp. ("First Mining" or the "Company") (TSX: FF) (OTCQX: FFMGF) (FRANKFURT: FMG) is pleased to
announce that the Springpole Gold Project (the "Project" or the "Springpole Project") has received its
Federal Environmental Assessment ("EA") approval. The Honourable Julie Aviva Dabrusin, Federal Minister of the Environment,
Climate Change and Nature, announced, on behalf of Canada, that the Company's Springpole Project may proceed (the "Decision Statement").
The Springpole Project is one of Canada's largest undeveloped gold resources and located approximately 110 kilometres northeast of
Red Lake, Ontario.
"This is a monumental day for First Mining, the
local Indigenous communities and municipalities who are positioned to benefit economically and socially from the Project, First Mining
shareholders and all of Northwestern Ontario," stated Dan Wilton, CEO of First Mining. "The Springpole Project approval by the
federal government validates that this Project will be the biggest economic driver of Northwest Ontario in a generation, providing significant
economic opportunity to the surrounding communities. The Project will generate billions of dollars in government revenue, deliver hundreds
of jobs and careers in the local region, provide significant contracting opportunities for regional and Indigenous businesses, support
regional infrastructure and services, and add billions of dollars to the gross domestic product at a critical time for the Ontario and
Canadian economy. We would like to thank the Indigenous communities we work with, local municipalities and other stakeholders, our in-house
team and external advisors for their significant contributions to the Environmental Assessment process."
The Decision Statement follows a thorough federal
environmental assessment process carried out since 2018, with input from Indigenous communities, the public, federal government departments,
and agencies including Environment and Climate Change Canada, Fisheries and Oceans Canada, Natural Resources Canada, and Transport Canada.
First Mining continues to work on advancing post-EA
phase engineering designs and optimizations for the Project towards construction readiness. The federal Decision Statement includes conditions
of approval based on, and consistent with, the environmental mitigation commitments and management actions proposed by First Mining within
the federal EA process covering areas including engineering designs, aquatic and terrestrial protections, monitoring, adaptive management
and consultation. The Company will continue to ensure compliance with all of the conditions needed to advance the construction and operations
in a timely manner.
About First Mining Gold Corp.
First Mining is a gold developer advancing two of
the largest gold projects in Canada, the Springpole Gold Project in northwestern Ontario, a PFS-stage project where the federal Environmental
Assessment for the Springpole Project was approved in June 2026, and the Duparquet Gold Project in Quebec, a PEA-stage development project
located on the Destor-Porcupine Fault Zone in the prolific Abitibi region. First Mining also owns a 20% project interest in the Pickle
Crow Gold Project and large equity interest in Seva Mining Corp.
First Mining was established in 2015 by Mr. Keith
Neumeyer, founder and CEO of First Majestic Silver Corp.
ON BEHALF OF FIRST MINING GOLD CORP.
Daniel W. Wilton
Chief Executive Officer and Director
Cautionary Note Regarding Forward-Looking Statements
This news release includes certain "forward-looking
information" and "forward-looking statements" (collectively "forward-looking statements") within the meaning
of applicable Canadian and United States securities legislation including the United States Private Securities Litigation Reform Act of
1995. These forward-looking statements are made as of the date of this news release. Forward-looking statements are frequently, but not
always, identified by words such as "expects", "anticipates", "believes", "plans", "projects",
"intends", "estimates", "envisages", "potential", "possible", "strategy",
"goals", "opportunities", "objectives", or variations thereof or stating that certain actions, events or
results "may", "could", "would", "might" or "will" be taken, occur or be achieved, or
the negative of any of these terms and similar expressions.
Forward-looking statements in this news release
relate to future events or future performance and reflect current estimates, predictions, expectations or beliefs regarding future events
and include, but are not limited to, the Company's plans with respect to advancing the Springpole Project including post-EA work, the
Duparquet Project and the Pickle Crow Project. All forward-looking statements are based on First Mining's or its consultants' current
beliefs as well as various assumptions made by them and information currently available to them. There can be no assurance that such statements
will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Forward-looking
statements reflect the beliefs, opinions and projections on the date the statements are made and are based upon a number of assumptions
and estimates that, while considered reasonable by the respective parties, are inherently subject to significant business, economic, competitive,
political and social uncertainties and contingencies. Such factors include, without limitation the Company's business, operations and
financial condition potentially being materially adversely affected by the outbreak of epidemics, pandemics or other health crises, and
by reactions by government and private actors to such outbreaks; risks to employee health and safety as a result of the outbreak of epidemics,
pandemics or other health crises, that may result in a slowdown or temporary suspension of operations at some or all of the Company's
mineral properties as well as its head office; fluctuations in the spot and forward price of gold, silver, base metals or certain other
commodities; fluctuations in the currency markets (such as the Canadian dollar versus the U.S. dollar); changes in national and local
government, legislation, taxation, controls, regulations and political or economic developments; risks and hazards associated with the
business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected
formations, pressures, cave-ins and flooding); the presence of laws and regulations that may impose restrictions on mining; employee relations;
relationships with and claims by local communities, indigenous populations and other stakeholders; availability and increasing costs associated
with mining inputs and labour; the speculative nature of mineral exploration and development; title to properties.; and the additional
risks described in the Company's Annual Information Form for the year ended December 31, 2025 filed with the Canadian securities regulatory
authorities under the Company's SEDAR+ profile at www.sedarplus.ca, and in the Company's Annual Report on Form 40-F filed with the SEC
on EDGAR.
First Mining cautions that the foregoing list of
factors that may affect future results is not exhaustive. When relying on our forward-looking statements to make decisions with respect
to First Mining, investors and others should carefully consider the foregoing factors and other uncertainties and potential events. First
Mining does not undertake to update any forward-looking statement, whether written or oral, that may be made from time to time by the
Company or on our behalf, except as required by law.
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SOURCE First Mining Gold Corp.
View original content to download multimedia: http://www.newswire.ca/en/releases/archive/June2026/30/c1172.html
%CIK: 0001641229
For further information: For further information, please contact:
Toll Free: 1 844 306 8827, Email: info@firstmininggold.com; Paul Morris, Director, Investor Relations, Email: paul@firstmininggold.com
CO: First Mining Gold Corp.
CNW 17:05e 30-JUN-26