Nancy Farley Wood

In 1957, during the International Geophysical Year, the N. Wood model G-15-34A neutron detectors (Simpson Counters) were utilized to collect data worldwide.

In 1949, Wood founded the N. Wood Counter Laboratory. The company was located atop the Hyde Park Bank building in Chicago. The company was established to develop, manufacture and supply gas-filled gamma radiation detectors and neutron radiation detectors. The customer base was research laboratories and universities engaged in the development of the peaceful utilization of atomic energy. The N. Wood Counter Laboratory company remained in business for over 50 years to supply a range of BF3 proportional neutron detectors, Geiger-Mueller detectors, proportional gamma counters and gas flow counters. In March 1994, Wood sold the company to her daughter, Marjory Wood Crawford.

Wood began her education in a one room schoolhouse in Green Ridge, Missouri. The family moved to central Missouri so she could attend college. Wood graduated from the Warrensburg Teacher's College and taught high school mathematics and physics. She attended the University of Chicago and in 1927 received a M.A. degree in education.

Nancy Farley "Nan" Wood (12 July 1903 – 19 March 2003) was a physicist and businesswoman who was a member of the Manhattan Project. She was the only daughter of Daniel Lee Farley and Minerva Jane Ross, and a lifelong feminist and proponent of the Women's liberation movement as a founding member of the Chicago National Organization for Women. As a business owner, she designed, developed and manufactured her own line of ionizing radiation detectors. During World War II, Wood taught calculus to U.S. Navy sailors in Chicago. Later, during World War II, she was recruited to the Manhattan Project, where she designed and developed ionizing radiation detectors with John Alexander Simpson in the instrument division at the University of Chicago Metallurgical Laboratory or Met Lab. In 1949, Wood founded the N. Wood Counter Laboratory.

Wood was born Nancy Lee Farley on a farm in 1903 at La Monte, Pettis County, Missouri and died in 2003 at the home of her son, William in Baroda, Berrien County, Michigan. Wood was the second child of four and the only daughter of Daniel Lee Farley and Minerva Jane Ross. In addition to her three brothers, she also had two half-brothers and a half-sister. In 1928, she married John Curtis Wood and the couple had 6 children, 5 of whom survived to adulthood. Nancy and John Curtis Wood and their daughter Shirley June (who died at the age of two) are buried at Green Ridge Cemetery in Green Ridge, Pettis County, Missouri.