The report presents the results of the experiments conducted for the Federal Emergency Management Agency at the MILL RACE high explosive test on September 16, 1981 at White Sands Missile Range. The MILL RACE event provide a simulated nuclear weapon airblast and ground motion environment to demonstrate, using full-scale structures and test objects, the validity and practicality of a number of blast upgrading and industrial hardening concepts that will support current Civil Defense planning. The design, construction, and objectives of each of the experiments are described and illustrated, and the test data and conclusions are presented. The experiments included host area and key worker shelters, expedient shelters, and industrial experiments at the 2, 20 and 40 psi peak overpressure levels.