Reuters Pictures
Caterpillar engineers Josh Crow (L), Derek Samsel (C) and Madan Jalla (R) work from the control room to monitor the test of the new electric drive power train simulator located at Caterpillar's Product Development Center of Excellence in Mossville, Illinois August 5, 2009. Nearby Peoria's main employer, Caterpillar Inc. has laid off, bought out or retired about 34,000 workers globally over the past year as demand for its earth-moving equipment declined along with economic growth.