The mineral industry of Bhutan – Alpha Geotech and Company
Chemicalgrade limestone mining for calcium carbide production was by Bhutan Carbide and Chemical Ltd. at Haurie Khola and at Rongri in the southwestern Bhutan. Limestone mining for cement production was by the stateowned Penden Cement Authority at Pugli and by Namgyel Cement at Kalesore, both in Samchi District of southwestern Bhutan; by ...