Superintendent, Mine Planning

About Hermosa

Hermosa, located approximately 75 miles south‑east of Tucson, Arizona, is the only advanced mining project in the United States as of 2023 that could produce two federally designated critical minerals—manganese and zinc—as well as silver and lead. The project has the potential to help power the nation’s clean energy future, strengthen the domestic supply chain of critical minerals, grow the local economy, and improve lives in Santa Cruz County and the surrounding community for generations to come.

• Annual short‑term incentive bonus that recognizes both your individual performance and the overall success of the business.
• When you choose to contribute more into your retirement savings, South
  32 will match it up to a certain percentage.
• South
  32 provides you with 4 weeks paid time off.
• 12 weeks full‑paid parental leave for primary carers and 2 weeks full‑paid parental leave for secondary carers.

The Superintendent, Mine Planning is responsible for leading and coordinating all mine planning activities for a large‑scale underground polymetallic mining operation. This role oversees mine design, scheduling, and strategic planning across multiple planning horizons to support safe, efficient, and cost‑effective extraction of ore and waste.

The Superintendent will develop and maintain integrated mine plans that incorporate geological, geotechnical, mining, mine services, processing, operational, and financial considerations to support the successful transition from project execution through steady‑state operations.

Reporting as a key technical and operational leader, the role manages a team of mine planning engineers while collaborating closely with Operations, Technical Services, Processing, Operational Readiness, and Project teams to optimize mine performance and support the long‑term strategic objectives of the Hermosa Project. The role is also responsible for annual Reserve Declaration activities and leading technical studies focused on operational optimization, growth opportunities, and value creation across the operation.

• Lead long‑term, medium‑term, and short‑term mine planning activities for underground operations.
• Develop and maintain integrated mine designs and schedules aligned with operational, technical, and financial objectives.
• Optimize mine layouts, sequencing, and extraction strategies to maximize ore recovery, productivity, and project value while minimizing risk and operating costs.
• Drive technical excellence in mine planning through close collaboration with Geology, Geotechnical, Mine Services, Ventilation, Processing, and Operations teams.
• Oversee annual Mine Reserve calculations and reporting requirements.

• Partner closely with Mine Operations and Operational Readiness teams to support the transition from construction/project phase into stable operations.
• Support development and implementation of production reporting systems, short‑interval control processes, and operational planning tools.
• Collaborate with South
  32 teams and external contractors/consultants to advance underground design and construction planning activities.
• Monitor and improve mine planning systems, processes, standards, and tools to support operational readiness and continuous improvement.

• Manage the site‑wide mine cost model (XERAS), including reporting, reconciliation, forecasting, and cost analysis.
• Support business planning, budgeting, and financial evaluations related to mining activities and growth opportunities.
• Work collaboratively with Business Strategy and Financial Evaluation teams to develop and maintain economic and financial models.
• Lead and participate in technical studies related to mine expansion, optimization, and long‑term strategic development.

• Lead, mentor, and develop a high‑performing team of mine planning professionals.
• Promote a strong culture of safety, accountability, collaboration, and continuous improvement.
• Manage consultant performance to ensure delivery of high‑quality technical work.
• Build and maintain strong working…