** Shares of Mongolian Mining Corp drop 17% to HK$1.86, lowest since April 19; set for second session of decline
** Stock set for worst day since May 13; among top 10 decliners on the Hong Kong bourse
** The Chinese coal miner expects to post up to $15 mln loss, excluding any extraordinary items, for the six months ended in June as compared to a net profit of $2.7 mln the same period in 2020
** Says its sales volume was hit as coal export shipments from Mongolia to China were hit by COVID-19 curbs and limited traffic at Sino-Mongolian border
** The Hong Kong composite Industry Index tracking energy stocks falls 3.3%, and the material index drops 4%
** The Hang Seng China Enterprises Index eases 0.7%, and the benchmark index slips 0.4%
** The stock had soared 83.6% this year as of last close