The Cosmic Ray Observatory Project (CROP) in Nebraska and the Snowmass Area Large Time-coincidence Array (SALTA) http://crop.unl.edu http://faculty.washington.edu/~wilkes/salta/ School set up Extensive air shower Clear Creek (Henderson) Array of detectors in weatherproof enclosures Current SALTA school locations in Colorado Nebraska school locations CROP and SALTA teams study extensive cosmic ray air showers using scintillator detectors on high school rooftops and GPS time stamps SALTA start up workshop in 2001 Participants at the July 2005 CROP workshop Data acquisition electronics card SALTA session at Aspen Center for Physics, July 2004 Detector preparations at UNL and tests at schools LabView based run control software on data taking PC