Hermosa

Who we are
- Our approach
- Our Board
- Our Lead Team
- Risk & governance
  - Anti-bribery and corruption
  - Competing fairly
Our purpose is to make a difference by developing natural resources, improving people's lives now and for generations to come. We are trusted by our owners and partners to realise the potential of their resources.
Our business
- Australia
- Southern Africa
- South America
  - Brazil Alumina
  - Cerro Matoso
- Exploration & projects
- Marketing
- Our commodities
South32 is a globally diversified mining and metals company producing bauxite, alumina, aluminium, metallurgical coal, manganese, nickel, silver, lead and zinc in Australia, Southern Africa and South America.
Community & society
We’re a business with a purpose and believe trust and transparency are essential to the way we operate. That means being in touch with the broader community – considering different perspectives and working together to create shared value.
Sustainability
Environment
We work hard to be responsible stewards of the environment and treat natural resources with care so that they are available for future generations. Successful environmental management is essential to our business.
People & careers
Our people are the foundation of our success and the key to our sustainability and productivity. Together, we create an inclusive workplace where we hold ourselves and each other to account to demonstrate our values.
Investors & media
- Investor centre
- Media centre
Keep up to date with our latest news and announcements.

History and location

In August 2018 we completed the acquisition of Hermosa in the Patagonia Mountains, about 80 kilometres south-east of Tucson, Arizona. Hermosa comprises two major mineral deposits, Taylor and Clark.

Hermosa strongly complements our existing portfolio and provides the opportunity to leverage the underground mining and processing methods we've used at our Cannington operation in Queensland, Australia.

Beneath the surface

The Taylor deposit is a greenfield development option that has a reported resource of 138 million tonnes, averaging 3.82% zinc, 4.25% lead and 81 g/t silver. Study work to date has confirmed a preference to pursue a dual shaft development configuration, that prioritises early access to higher grade ore. Read the latest announcement here.

The Clark deposit has a reported resource of 55 million tonnes, averaging 2.31% zinc, 9.08% manganese and 78g/t silver. Read the latest announcement here. A scoping study for the Clark deposit is evaluating the potential to produce a manganese product used in electric vehicle batteries.

To take an interactive tour and explore the Taylor deposit please click here. Google Chrome is recommended.

Students gain valuable experience

Summer internships for students provide mining experience at our Hermosa project.

Developing skills for the future

We've provided funding for an after school program that encourages Latina girls to explore robotics and coding.

We’ve constructed a dry stack tailings storage

The new state-of-the-art facility meets the highest safety and environmental standards.

Contact

Get in touch with Hermosa

Pat Risner, President Hermosa

Pat Risner, Hermosa President

Pat studied Mining Engineering at the University of Missouri and came to South32 from BHP, where he held the position of Group Health, Safety and Environment Officer. He is an experienced mining operator, having worked in technical, planning and operational roles in both the United States and Australia. With strong leadership experience in mining health, safety, and environment, he is regarded as an industry expert in complex project planning and development.

Corporate Affairs

Hermosa Project
2210 E Fort Lowell Road
Tucson
Arizona 85719
United States of America

Phone: +1 520 485 1300

Email: [email protected]