** Shares of Macmahon Holdings MAH.AX rise as much as 4.3% to A$0.610, their highest level since early-May 2012

** Stock on track for its best session since November 25, if gains hold

** The mining services provider announces its unit received an award from Tilt Renewables for A$51 million ($33.82 million) in works as part of the balance of plant contract at the 108MW Waddi Windfarm, Western Australia

** Stock up 76.8% YTD, including the session's moves

($1 = 1.5081 Australian dollars)

(Reporting by Anjali Singh in Bengaluru)

((anjali.singh2@thomsonreuters.com;))