Alcoa Corporation (“Alcoa”) manages a global inventory of impoundment facilities used to store bauxite mine tailings and alumina refinery residue. These include active, inactive and closed sites wholly or majority-owned and managed by Alcoa, as well as joint-venture facilities in which Alcoa holds a minority interest.
An Impoundment is defined as any dam, or other engineered structure, intended to confine a body of water (fresh, alkaline, or acidic), mine tailings or refining residue, or any other solid or liquid waste material.
Alcoa's size limit criteria for impoundment public disclosures are:
- Greater than 3 hectares (ha) in area, or
- Height (dike, max liquid, cap, etc.) at least ~2 meters above low point of surrounding grade,
- In-ground impoundments (mine pit, pond, etc.) and solid waste landfills not included.
In accordance with GISTM requirement 15.1 Alcoa’s Impoundment disclosure is updated annually (most recent July 27, 2023).
Map of Alcoa Impoundments
Active, Inactive, and Closed (Transformation) Sites
Legend
Bauxite Residue
🟦 Alcoa Owned and Operated
🔵 Alcoa Minority Owner
🔷 Alcoa Interest - not Owned
Mine Tailings
⬛ Alcoa Owned and Operated
⚫ Alcoa Minority Owner
Fly Ash
⬜ Alcoa Owned and Operated
Location Details
A. Europe
- San Ciprian, Galicia, Spain | 🟦 Alcoa Owned and Operated | Bauxite Residue
B. North America
- Warrick, IN, United States | ⬜ Alcoa Owned and Operated | Fly Ash
- Bauxite, AR, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Listerhill, AL, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Point Comfort, TX, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Sherwin Copano, TX, United States | 🔷 Alcoa Interest - not Owned | Bauxite Residue
C. Asia
- Ma'aden, Saudi Arabia | 🔵 Alcoa Minority Owner | Bauxite Residue
D. Africa
- CBG | ⚫ Alcoa Minority Owner (Technical Oversight Only) | Mine Tailings
E. South America
- Suriname | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Juruti, Brazil | ⬛ Alcoa Owned and Operated | Mine Tailings
- Sao Luis, Brazil | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Pocos de Caldas, Brazil | 🟦 Alcoa Owned and Operated | Bauxite Residue
F. Australia
- Kwinana, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Pinjarra, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Hedges, Australia | ⬛ Alcoa Owned and Operated | Mine Tailings
- Wagerup, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue