Mining firm Toba Bara Sejahtera (TOBA) spent US$28.2 million for investment in 2017. Its investment spending surged 154% from US$11 million invested in 2016. TOBA acquired fixed assets of US$6 million last year, compared to US$3.1 million investment in previous year. TOBA also boosted investment in mining properties to US$5.73 million in 2017, from US$4 million in 2016.To subscribe please click here