Construction major L&T, which is in the midst of a hostile takeover of Mindtree Ltd., has secured three board positions at the IT services firm, giving it a firm control over the company. Mindtree on Thursday said L&T CEO and MD S.N. Subrahmanyan would join its board as a non-executive director with effect from July 16. The nomin ation and remuneration committee and the board of directors of Mindtree have approved and recommended the appointments of Jayant Damodar Patil and Ramamurthi Shankar Raman as non-executive directors, subject to shareholders’ approval.