Project · Pima County, AZ · Updated 4 days ago
Copper World Mine (formerly Rosemont Mine)
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Sourced from Pima County meeting, Oct 21, 2025. ZoneWire tracks 61 projects in Pima County, AZ, updated within 24h of every meeting.
Where this stands
Open-pit copper mine; Canadian company financed in part by Mitsubishi. Estimated ~3-4.5 billion gallons of groundwater per year; ~40,000 truck trips per year; tailings piles near Copper Ridge Elementary School. Recent proposed state trust land sale/lease (~160 acres) for tailings expansion near Holmes and Copper Ridge Elementary. County reaffirmed opposition via Resolution 2025-49.
- Project
- Copper World Mine (formerly Rosemont Mine)
- Asset class
- Industrial
- Developer
- HudBay Minerals
- Location
- Santa Rita Mountains, Pima County
- Scale
- 160 acres
- County
- Pima County, AZ
- Jurisdiction
- Pima County
- Current status
- Under Review
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Copper World Mine (formerly Rosemont Mine)
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