This work was done at existing Siemens factory at Kalwa. The natural ground was highly undulated had to be leveled for transformer manufacturing facilities to be added to the existing complex. Our scope of work involved excavation and transportation of over 1,00,000 cum of earth, murrum and hard rock. The most critical part was the excavation by chieselling and blasting of 70,000 cum of hard rock during the operating condition of the factory.