Private company

Rio Tinto Aluminium

Mining business1

Rio Tinto Aluminium (RTA), previously known as Comalco (Commonwealth Aluminium Corporation Pty Ltd), are historic companies, which were absorbed into what is now Rio Tinto Alcan, headquartered in Montreal, Canada. The companies' business is focused on bauxite, alumina, and primary aluminium.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Rio Tinto Aluminium (RTA), previously known as Comalco (Commonwealth Aluminium Corporation Pty Ltd), are historic companies, which were absorbed into what is now Rio Tinto Alcan, headquartered in Montreal, Canada. The companies' business is focused on bauxite, alumina, and primary aluminium.2

Sources

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