2019 Minerals Yearbook
tshophangma Mine, which had 150,000 t of coal reserves, occur between hard sandstones, against which rock breakers and jackhammers were not effective. SMCL produced 77,670 t of coal, which accounted for 42% of Bhutan's total coal production in 2019 (table 1; State Mining Corp. ltd., 2020, p. 10; 2021).
