Iron Ore Transportation by Trucks Lead to Air Pollution in Goa Mining Area Iron ore transportation has once again increased air pollution in Indias Goa mining area. Goa State Pollution Control Board (GSPCB) air test data shows that air pollution in the area is mainly due to iron ore transportation activities, starting from March. Member secretary of GSPCB Shamila Monteiro said the board has written to the directorate of mines and geology (DMG) to reduce the number of ore transportation trips by trucks in areas where it has noticed air pollution.