The document summarizes the battle between Larsen & Toubro (L&T) and Grasim Industries for control of L&T's cement business in the early 2000s. Reliance Industries first tried to acquire L&T in the late 1980s, followed by attempts from Grasim Industries starting in 2001. After negotiations and regulatory reviews, L&T and Grasim agreed in 2003 to demerge L&T's cement division, with Grasim acquiring a majority stake. The demerger was completed in July 2004, making Grasim the largest cement producer in India.