Ian Macintyre and Dan Chaney at Work, by Kier, Porter M, July 30, 1984, Smithsonian Archives - History Div, Staff from the National Museum of Natural History's Paleobiology Department at a dam-construction site on July 30, 1984, in Fauquier County, Virginia, splitting slabs of shale in search of 175-million-to-205 -million-year-old fossil fishes. Included in the photograph are Ian Macintyre (with hammer) and Dan Chaney (working on rock)..