Reliance Industries, the Mukesh Ambani Company, is set to develop the world's largest single office space spanning over two million square feet in suburban Mumbai. The proposed Rs. 150-crore office structure will be as large as four big-sized malls put together and serve as the headquarter of RIL's businesses of petroleum, retail and agriculture. The edifice, being constructed by group company Reliance Engineers Association Ltd, is to be housed within a larger complex measuring 40 million square feet. The complex itself, to be raised on a theme titled "Brilliance Per Square Inch," is going to include, among other things, a lake and a green belt. s