** Austin Engineering gains as much as 3% to A$0.520; biggest intraday pct gain since Nov. 28
** Mining equipment maker gets purchase orders worth ~A$2.7 mln ($1.7 mln) from tier-one iron ore producer in India for 17 ULTIMA trays, used to enhance truck payload capacity
** Orders part of tray replacement programme, with with a service life of around four years
** Co sees strong potential for future opportunities in India
** Appoints representative to oversee contract, further business in world's fourth-largest iron ore producer
** Over 3.7 mln shares traded, 2.6x the 30-day avg
** ANG gains ~56% YTD
($1 = A$1.5689)
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com;))