Responsible Mining. Critical Resources. Clean Future. 1
405 S 8th Street #201, Boise, ID 83702
Responsible Mining. Critical Resources. Clean Future.
1
NEWS RELEASE
April 13, 2023
Perpetua Resources Selects Iron Woman Construction for 2023 Cleanup Activities at
Historical Mine Site
Native American owned Iron Woman Construction brings environmental restoration and mining expertise.
Selection aligns with Perpetua’s commitment to strong safety and environmental practices, and local hiring.
Cleanup activities will include relocating over 300,000 tons of legacy mine waste to improve water quality
in Stibnite District.
BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or
the “Company”) announced today it selected Iron Woman Construction and Environmental Services (“Iron
Woman”) to conduct environmental improvements in the historical Stibnite Mining District in 2023. Iron
Woman is a Native American Member -owned company with extensive experience resolving water
infrastructure, environmental, mining and logistics challenges across the Rocky Mountains, including Idaho.
Beginning in early summer 2023, Iron Woman will support Perpetua Resources to move over 300,000 tons
of legacy mine waste away from sensitive waterways on site and continue efforts to restore impacted
riparian areas.
“We did not cause the problems facing the hi storical Stibnite Mining District, but we are proud to be part
of the solution and look forward to continuing our work to improve water quality on site,” said Laurel Sayer,
President & CEO of Perpetua Resources. “In 2022, we made significant progress to ad dress decades-old
problems by isolating streams from historically contaminated material along with other contamination
removal actions. Now, I am excited to welcome Iron Woman to our team to continue this important work. I
am confident that our shared comm itments to prioritize safety, community, and sustainability will help our
efforts to leave Stibnite better than we found it.”
In 2021, Perpetua was granted permission from the Environmental Protection Agency (“EPA”) and the
United States Department of Agriculture (“USDA”) to conduct time critical early action cleanup activities at
the abandoned Stibnite mine site. Cleanup work under the first phase of the agreement started in 2022
and, after a competitive bidding process, Iron Woman was selected by Perpetua Resources to help with
cleanup activities planned for 2023. Work this year will include removing between 300,000 and 325,000
tons of legacy waste and tailings away from rivers on -site, safe storage of the material, and significant
restoration work surrounding the rivers. Cleanup activities will be overseen by the EPA and USDA.
“From our Native American roots, a sustainable approach to projects has always been an Iron Woman
guiding principle.” said Shaun Egan, CEO of Iron Woman Construction and Environmenta l Services. “We
are proud to work in partnership with Perpetua Resources on this important project. We strive to be a force
for good in the communities in which we work. We believe that o ur history of responsible environmental
stewardship and commitment to safety will help to ensure that this project meets the needs of the people
it touches.”
Responsible Mining. Critical Resources. Clean Future.
2
Iron Woman is expected to start work in June 2023 with a team of over 30 people, largely recruited from
the local region, focused on removing waste from three areas of site that parallel the East Fork of the South
Fork of the Salmon River. The locations of the work sit outside the footprint of Perpetua’s proposed Stibnite
Gold Project and would be left untouched if it wasn’t for the Company’s voluntary cleanup efforts. While the
multidisciplinary general contractor already has a highly trained workforce, Iron Woman intends to actively
recruit from the communities closest to the site to fill any openings on the project. The Iron Woman team
will be based at site in a pre-existing exploration camp to eliminate the need for daily commuting.
Iron Woman Construction and Environmental Services was founded as a Native American owned trucking
company in 1999 and has since expanded to become a multidisciplinary general contractor. The name Iron
Woman is an homage to founder Shaun Egan’s great -great-great-grandmother, a full -blooded Blackfeet
Indian. Iron Woman’s civil, environmental, and mining background includes mass earthmoving, hazardous
materials management, remedia tion, mine closure, landfill cap and cover, tailings management, waste
placement, revegetation, water quality control and diversion, and river/stream restoration. Known for its
award-winning safety performance and commitment to social responsibility, Iron Woman provides full
mining support, helping responsibly source domestic minerals for a sustainable future.
For further information about Perpetua Resources Corp., please contact:
Chris Fogg
Investor Relations Manager
Mckinsey Lyon
Vice President External Affairs
Website: www.perpetuaresources.com
About Perpetua Resources and the Stibnite Gold Project
Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site
restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central
Idaho that are encompassed by the Stibnite Gold Project. The Project is one of the highest-grade, open pit
gold deposits in the United States and is designed to apply a modern, responsible mining approach to
restore an abandoned mine site and produce both gold and the only mined source of antimony in the United
States. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be
powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from
the Project will be supplied to Ambri, a US-based company commercializing a low -cost liquid metal battery
essential for the low -carbon energy transition. Perpetua Resources has received up to $24.8 million in
Defense Production Act Title III funding to advance construction readiness and permitti ng of the Project.
Antimony trisulfide from Stibnite is the only known domestic source of antimony that can meet U.S. defense
needs for many small arms, munitions, and missile types. In addition to the company’s commitments to
transparency, accountability, environmental stewardship, safety and community engagement, Perpetua
Resources adopted formal ESG commitments which can be found here.
Forward-Looking Information and Cautionary Note
Statements contained in this news release that are not historical facts are "forward -looking information" or "forward -
looking statements" (collectively, "Forward-Looking Information") within the meaning of applicable Canadian securities
legislation and the United States Private Securities Litigation Reform Act of 1995. Forward-Looking Information includes,
Responsible Mining. Critical Resources. Clean Future.
3
but is not limited to, disclosure regarding possible events, next steps and courses of action including environmental
clean up actions by us and our contractors, including Iron Woman; our ability to comply with and obtain permits related
to the Stibnite Gold Project; actions to be taken by the USFS, the State of Idaho and other government agencies and
regulatory bodies; predictions regarding improvements to water quality, water temperature, and fish habitats and other
environmental conditions at the site, including with respect to process and timing of such improvements; reduction of
the Project footprint and the anticipated benefits and other effects there of; our ability to successfully implement the
Project and the occurrence of the expected benefits from the Project, including contributions to the workforce, national
security and clean energy transition; our and Ambri Inc.'s ability to perform under the s upply agreement, which
agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony
concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing. In
certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words
and phrases or statements such as "anticipate", "expect" "plan", "likely", "believe", "intend", "forecast", "project",
"estimate", "potential", "could", "may", "will", "would" or "should". . Forward -Looking Information involves known and
unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of
Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied
by the Forward-Looking Information. Such risks and other factors include those factors discussed in Perpetua Resources'
public filings with the U.S. Securities and Exchange Co mmission (the "SEC") and its Canadian disclosure record.
Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may
cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there
may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be
no assurance that Forward-Looking Information 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 Information. For further information on these and other risks and uncertainties that may affect the Compa ny's
business, see the "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of
Operations" sections of the Company's filings with the SEC, including Perpetua’s Annual Report on Form 10-K filed with
the SEC on March 16, 2023, which are available at www.sec.gov and with the Canadian securities regulators, which are
available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release
publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances
after the date hereof or to reflect the occurrence of unanticipated events.