India, Jan. 15 -- At least sevenpersons were killed in a huge explosion at a chemical factory at Boisar in Maharashtra's Palghar district and it was one more fire disaster in the state. Boisar is over 100 km away from Mumbai. The under-construction plant of Ank Pharma, where the explosion took place at an enormous proportion caused death and burn injuries. The blast took place during testing of certain chemicals was severe and was heard up to 15 kms from the blast spot. Even window panes of some of the residential areas in the vicinity were broken in the impact of the blast. The impact was so severe that the National Disaster Response Force (NDRF) was called for assistance and rescue operation. It is one more case of serial fire in the st...