** Shares of Monadelphous Group MND.AX rise as much as 11.4% to A$25.080, their highest point since February 27, 2013
** The engineering co expects half-year revenue of ~A$1.5 billion ($974.70 million) vs A$1.05 billion reported last year
** Co says operating activity is expected to moderate in the second half, but expects full-year revenue to be around 20% to 25% higher than a year ago
** Co also receives new construction and maintenance contracts in the resources sector valued at A$140 million
** Stock among the top gainers in ASX 200 benchmark index .AXJO
** As of last close, MND stock was up 60.9%, YTD
($1 = 1.5389 Australian dollars)
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))