Mining firm Toba Bara Sejahtera (INRU) suffered a loss of US$2.1 million in the first quarter (Q1) of 2020, expanded from loss US$0.4 million in the same period of 2019 due to higher costs. Sales jumped 125% to US$35.9 million, but the cost of goods sold also surged 191% to US$35.6 million. 

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