Botswana consultant Earthtec is overseeing the EIS.
In the company’s latest corporate presentation, Aviva chief executive officer Lindsay Reed said the project held 200 million tonnes of export coal and 150Mt of domestic coal.
To date, studies on the project have been completed for a 10Mt per annum run of mine operation.
The mine also has an identified 895Mt JORC-compliant resource.
Reed said the project was a viable asset because it was located on the infrastructure corridor.
Aviva is earning a 90% interest in the Mmamantswe coal project, which it acquired in 2007.
The project is located 70km north of the capital, Gaborone, on the South African border.
Aviva is pursuing spin-out options for Mmamantswe but is open to other opportunities for the asset and will continue to work with the authorities in Botswana to support the development of the coal industry.