Twistdraai Coal Mine South Africa The Twistdraai mine and washing plant is part of Mining s Secunda Collieries complex Lying in the Highveld coalfield east of Johannesburg the mine was opened in 1980 to produce coal for s Secunda synthesis plant and since 1995 has been a threeshaft complex producing lowash steam coal for the export market as well as a middlings product for feed …