Unearthing canyon's cluesMysteries of Anasazi revealed in Chaco's centuries-old corn By Jim Erickson, Rocky Mountain News May 15, 2004 CHACO CANYON, N.M. - As Rich Friedman twists the handle of the T-shaped auger, the steel blades bite into loamy brown soil in a field where scientists suspect Anasazi farmers grew corn 1,000 years ago. Friedman is part of a Boulder-led research team that collected 60 soil samples around the Chaco basin this month in an ongoing effort to determine where the Anasazi grew all the corn they would have needed to feed the thousands who periodically gathered in the canyon....