The contract covers the shipment of up to 260 million bank cubic meters of overburden materials with an option to cover a further 50 million. Buma, the country’s second biggest mining contractor is a unit of Delta Dunia Makmur. Revenue at the company is forecast to increase to US$1.2 billion to US$1.4 billion. Net income at Bayan rose to IDR 1.3 trillion in the first nine months this year and revenue rose to IDR 9.2 trillion.