Chalons Terminal District, PDC (Source: Jim Nichols) A higher resolution aerial photo from March 1969 (IGN) is used here to show more detail than the original 1958 image. There are several buildings and pads where other buildings were located on this image that did not exist in 1958. I have marked those features that are releveant for 1958 discussion with a yellow dot. (If anyone has details on any of the buildings that were added to the facility after 1958, please contact the webmaster.)