Photo Album: Radon Mitigation in Grand Island, NE The NRD Midwest team installed a radon mitigation system with one extraction point, and an exterior fan with a muffler. Suction Point Where the air is pulled up and vented out of the home. Related content Customer Review: By Aaron M. of Grand Island, NE View Review → "The gentlemen did a great job!" Read More - Aaron M. of Grand Island, NE « prev next »