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South32 Hermosa Project Expansion

Sector: Water Supply and Storage • Location: Santa Cruz County, Arizona, United States

Source: AZPM

Project
Awarded

The South32 Hermosa Project has received approval from the Arizona Department of Environmental Quality to expand its dry-stack, lined tailings storage facility. This expansion is part of a voluntary effort to clean up mine waste and aims to use 90% less water than traditional methods, while sourcing critical minerals like zinc and manganese.

Status
Closed
Sector
Water Supply and Storage
Location
Santa Cruz County, Arizona, United States of America
Updated
22 Jul 2026
Source
AZPM

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Project Information

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The project “South32 Hermosa Project Expansion” is an infrastructure initiative in the Water Supply and Storage sector, located in Santa Cruz County, Arizona, United States. Taiyo aggregates data on it from AZPM.

Participants

Not available for this record.

Status

Original status

Awarded

Taiyo status

Closed

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

The South32 Hermosa Project has received approval from the Arizona Department of Environmental Quality to expand its dry-stack, lined tailings storage facility. This expansion is part of a voluntary effort to clean up mine waste and aims to use 90% less water than traditional methods, while sourcing critical minerals like zinc and manganese.

Original sector

Mining

Location

Country

United States of America (USA)

State

Arizona

City

Santa Cruz County

Source

Source

AZPM

URL

More Details

Record type

Project

Sector

Water Supply and Storage

Article published date

2025-02-28

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