21. In fact SOD was discovered in Southern Oregon through aerial survey work in 2001. 22. The volcano was discovered during an aerial survey in 1946. 23. We are also serving our community by helping our scientists in aerial survey work. 24. They have also carried out an aerial survey of the al-Taji area north of Baghdad. 25. The United States Geological Survey conducted multiple aerial surveys of landmasses specifically vulnerable to hurricanes. 26. The railway's route was chosen after two aerial surveys and comparisons of numerous possible alternatives. 27. The 125 mile-high views collected here come from the never-before-published archives of Fairchild Aerial Surveys . 28. He went on to fly a lot of aerial survey work in the postwar years. 29. An aerial survey would be conducted to determine areas where the canals would be built. 30. This scale was modelled off 408 Fairchild Aerial Surveys .
