I live 30 miles away from a city. My house is a wood frame with a poured concrete basement. My front door is ground level, but unfortunately my yard slopes to where I have a door in my basement leading out to the back yard. My plan was in case of nuclear attack was go to the laudary room which is a small room in the basement in the front corner of the house. I figured its the deepest part of the house and I could use the washer and dryer as shielding after I move it to the was facing the backyard. I also have a lot of heavy stuff, like a fridge and tool cabinets that I can add as additional shielding. Will this be enough to protect me from the radiation and fallout? Also my concern is with the dryer vent. I plan to seal it off with clothing and duct tape, but will that be enough, or am I better off sealing off the laudary room, and picking another part of the basement? Finally if the city gets hit with a nuke, and all communications go out, how long should I stay sheltered in the basement before coming out.