A Geophysical Survey at Rural Plains

Radar and conductivity surveys find debris, but probably not the fortification trench that was sought. Survey for Dave Dutton (Dutton Associates).雷达与电导率勘探（radar and conductivity surveys）探测到了残骸，但大概率未找到本次预期搜寻的防御工事壕沟。本勘探为戴夫·达顿（Dave Dutton）及其所属的达顿联合公司（Dutton Associates）开展。