Moi-than ( Hon-ngi : 煤炭 ； Yin-ngi : Coal ) he yit-chung kho-yen ke vu-set fe?t chung-het-set chh??m-chit-ngam , an-ngiong ke chh??m-chit-ngam thung-song he fat-sang chhai moi-chhong fe?t moi-chhen ke ngam-sa?k thi-chhen chung fe?t khong-mak chung. Moi-than chu-yeu he yu than , khin , liu , yong lau tham keu-s??n.