PT Saptaindra Sejati (SIS) is one of Indonesia's leading mining contractors that provides a broad range of services for coal mining companies, covering many aspects from contract mining, mine planning, civil works, infrastructure development, land logistics and reclamation of mining areas. Due to its large exposure to customers in the coal mining sector, SIS can be directly impacted by the fluctuations of coal prices.OUR HISTORYPT Saptaindra Sejati started its business in 1991 as a small subcontractor for heavy equipment named Dianlia Setyamukti. The business developed and successfully became a mining contractor, and among the several first projects it was awarded were for PT Adaro Indonesia and PT Berau Coal.In 2002, the shareholders and the management agreed to transfer all operational activities, consisting of staff and assets, gradually into PT Saptaindra Sejati (SIS). SIS was acquired by Adaro Energy in 2008.