Posted in Instagram, York County During the Cold War, many countries built fallout shelters. Plans were made, however, to use existing buildings with sturdy below-ground-level basements as makeshift fallout shelters. These buildings were placarded with the orange-yellow and black trefoil sign designed by United States Army Corps of Engineers in 1961. The program was abandoned in the 1970s Author: chris Published Date: July 28, 2018 Leave a Comment on During the Cold War, many countries built fallout shelters. Plans were made, however, to use existing buildings with sturdy below-ground-level basements as makeshift fallout shelters. These buildings were placarded with the orange-yellow and black trefoil sign designed by United States Army Corps of Engineers in 1961. The program was abandoned in the 1970s Instagram filter used: Normal Photo taken at: Old Town Rock Hill, SC View in Instagram ⇒ Author: chris