** Kaiser Reef KAU.AX rises as much as 9.3% to A$0.295, highest since July 2021
** Stock posts biggest intraday pct gain since September 1
** Gold explorer says its Henty Gold Mine produced 8,115 oz gold in quarter ended September 30 in first full-period of co's ownership of project
** YTD, KAU gains 78.1%
(Reporting by Keshav Singh Chundawat in Bengaluru)
((Keshav.singhchundawat@thomsonreuters.com))