* 1999: Reliance Industries wins exploration rights for the KG-D6 oil and gas block off eastern coast of India. * July 6 2002: Reliance's founder, Dhirubhai Ambani, dies. Differences arise between his sons, Mukesh and Anil Ambani, over control of the group of companies. * June 18 2005: With their mother, Kokilaben, as mediator, the brothers agree to demerge their father's empire.

Mukesh gets Reliance Industries with its gas, oil and petrochemical businesses, while Anil takes over the group's telecoms, power plant and financial arms. * Nov 18 2006: Anil's Reliance Natural Resources files a case against Reliance Industries in the Bombay High Court. Anil's company claims that, under the demerger agreement, Reliance Industries must provide it with gas from the KG block at $2.34 per million British thermal units. * September 13 2007: The government fixes the gas pricing at $4.2 MMBtu.