Preserving the past in 3-D
(PHYSorg.com Archaeology & Fossils)

It isn`t often that you get a sunny, 70-degree day in the beginning of February, especially less than a week after a record-setting cold snap plunged most of Illinois into subzero temperatures. We certainly aren`t about to waste the fine weather, even if it means a day lugging heavy equipment up a steep ravine in the bluffs overlooking the Mississippi River.