waste increase the transportation of wanted sulfur to slopes
explosive has effect_of_destroying_things bitumen_upgrading is destruction_event. bicycling is great_form_of_transportation. buildings has effect_of_trapping_radon snow_surface_transportation is land_transportation_event. coal_often has sulfur phosphate_leaching is draining. lighterage is transportation. peat is fuel. demands_on_mineral_transport_systems has increased