1. Lean Construction Manager, Turner Construction Company, 55 E. Monroe, Suite 1430, Chicago, IL 60603.
2. Professor, Construction Engineering and Management, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr., UCB 428, Boulder, CO 80309-0428.
3. Scholar in Residence, W. Edwards Deming Professor of Management, Lockheed Martin Engineering Management Program, Univ. of Colorado Boulder, Boulder, CO 80309-0428.
4. Research Assistant, Construction Engineering and Management, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado Boulder, ECCE 156/160, 1111 Engineering Dr., UCB 428, Boulder, CO 80309-0428 (corresponding author).