March 25 (Reuters) - ** Mastermyne Group MYE.AX soars 13.3% to A$0.170, highest since February 18

** Miner executes mining services contract with GEAR M Illawarra Met Coal at its recently-acquired Appin mine in New South Wales

** Says contract anticipated to generate revenues of ~A$180 mln ($113.1 mln) across the initial 3-year term

** Stock set for biggest intraday pct gain since October 25, 2024

** MYE gains 3% YTD

($1 = A$1.5911)

(Reporting by Jasmeen Ara Shaikh in Bengaluru)

((JasmeenAraIslam.Shaikh@thomsonreuters.com;))