Tailings Impoundment Database

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.

Alcoa’s Impoundment disclosure is updated annually, most recent: Alcoa Impoundments Database

Map of Alcoa Impoundments

Active, Inactive, and Closed (Transformation) Sites

Legend

🟦 Bauxite Residue

⬛ Mine Tailings

⬜ Fly Ash

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 and Black Mud
  • Point Comfort, TX, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
  • Sherwin Copano, TX, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue

C. South America

  • Suriname | 🟦 Alcoa Owned and Operated - Majority Joint Venture (JV) | Bauxite Residue
  • Juruti, Brazil | ⬛ Alcoa Owned and Operated | Mine Tailings
  • Sao Luis, Brazil | 🟦 Alcoa Owned and Operated - Majority Joint Venture (JV) | Bauxite Residue
  • Pocos de Caldas, Brazil | 🟦 Alcoa Owned and Operated | Bauxite Residue

D. 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

Locations

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