** Yancoal Australia YAL.AX, one of Australia's largest pure-play coal miners, falls as much as 10% to A$5.6
** Stock posts its biggest intraday pct loss since March 13
** Co posts first-half net profit after tax before non-recurring items of A$163 million ($104.89 million), a 61% drop from pcp
** Co says results impacted by lower coal prices and attributable sales volumes, says saw elevated global supply and subdued demand
** Coronado Global Resources CRN.AX falls 6.4%, while Whitehaven Coal WHC.AX down 0.5%
** Broader mining sub-index .AXMM down 1%
($1 = 1.5540 Australian dollars)
(Reporting by Nichiket Sunil in Bengaluru)
((Nichiket.Sunil@thomsonreuters.com))