Project · Santa Cruz County, AZ · Updated today
Hermosa Project (South32) - mine and Centro operating center
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Sourced from Santa Cruz County meeting, Apr 1, 2026. ZoneWire tracks 28 projects in Santa Cruz County, AZ, updated within 24h of every meeting.
Where this stands
Zinc (and possible future manganese) mine on ~200 acres of private land; construction ~55% complete; two shafts ~50-65% complete; first underground zinc mining targeted mid-2026; zinc processing facility, tailings filtration plant (90% water reduction), fully enclosed material handling. Federal-land components: 138-kV UniSource power line, Flux Canyon access road, second tailings facility, drill pads. Centro remote operating center in Nogales for up to 200 workers, on track to open next year. Workforce to ramp to 600 employees in ~18 months, goal of 80% local Santa Cruz County residents. Final EIS and draft ROD issued March; objection period to April 20; final ROD early July; notice to proceed early September.
- Project
- Hermosa Project (South32) - mine and Centro operating center
- Asset class
- Industrial
- Developer
- South32
- Location
- Patagonia Mountains / Harshaw Road area, near Patagonia; Centro in Nogales
- Scale
- 200 acres
- County
- Santa Cruz County, AZ
- Jurisdiction
- Santa Cruz County
- Current status
- Under Review
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Hermosa Project (South32) - mine and Centro operating center
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