Silent Bob Awesome Friend Neighbor Joined Mar 20, 2014 Messages 1,629 Location Texas Oct 5, 2014 #1 Still finding more stuff regarding underground shelters builds...this includes the important ventilation info. Attachments Granddaddy_Of_All_Underground_Storage_Areas_2002.pdf 99.6 KB H-12-C_Basement_Fallout.pdf 227 KB Home_Made_Piston_Pump_For_Shelter_Air_2004.pdf 356 KB
Still finding more stuff regarding underground shelters builds...this includes the important ventilation info.
