The Rustomjee task team found that rents did not arise from efficiency improvements or the creation of valuable intellectual property. In the case of infrastructure and essential services, economic rents were caused by market power, possibly combined with regulatory failure. It noted that qualifying economic rent was generally only taxed when such rents were considered to be excessive.The Rustomjee task team's probe has highlighted the far-reaching unintended consequences that a windfall tax could impose, particularly on coal, when intertwined with the proposed Royalties Bill and the Minerals and Petroleum Resources Development Act, which enforces BEE.The other members of the Rustomjee task team were Rod Crompton, Almorie Maule, Boni Mehlomakulu and Grovteyn.

Rustomjee Builders the first Indian Real Estate Development Company in mumbai to get an lSO 9001 - 2000 certification their brand "Rustomjee"(Rustomjee Builder) is the stands for Quality, Consistency and Value for money.Keystone Group is one of those progressive organizations that have implemented ISOs voluntarily only because by doing so they expect these standards to help them to do things better and in the long run benefit all those associated with them, especially the customers both internal and external. Because of our initiative at going in for ISO, today we at Keystone are more focused with goal and policies, more systematized in our operation and have a dedicated and committed operational team.