Giant coal miner Bumi Resources (BUMI) suffered a loss of US$338 million in 2020, against a profit of US$103.1 million in 2019, as gross revenue fell 21% year on year (y/y) to US$3.68 billion and operating income dropped 46% to US$230.3 million. Its gross margin declined by 33% to US$435.6 million, and its operating margin fell to 6.3% from the previous 9.1%.

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