In summary, under the leadership of Dr. D. B. Dill, the Harvard Fatigue Laboratory became a model for research investigation into exercise and environmental physiology, especially as it relates to humans. When the laboratory closed and the staff dispersed, the ideas technical, and approaches to scientific inquiry were distributed throughout the world, and with them, Dill’s influence in the areas of environmental and exercise physiology. Dr. Dill’s continued his research outside Boulders City, Nevada, into the 1980s. He died in 1986 at the age of 93.