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Gladys West (1931 - Present) made major mathematical contributions to a device system that we cannot live without, the GPS. .
She received her education from Virginia Tech, became a math teacher and "then became the second black woman to join the Dahlgren, Virginia, naval base in 1956, where she was one of‌ only four black employees. During her stint, she collected location data from orbiting machines and input the data into giant supercomputers, while using early computer software to analyze surface elevations. She worked long days and nights recording satellite locations and on complex calculations." .
"Her work was also applauded by Capt. Godfrey Weekes, a former officer at the Naval Surface Warfare Center Dahlgren Division, in a message he wrote about Black History Month... “She rose through the ranks, worked on the satellite geodesy (science that measures the size and shape of Earth) and contributed to the accuracy of GPS and the measurement of satellite data. As Gladys West started her career as a mathematician at Dahlgren in 1956, she likely had no idea that her work would impact the world for decades to come.”
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Referenced from the article "LITTLE-KNOWN BLACK HISTORY FACTS: THIS BLACK WOMAN HELPED DEVELOP GPS TECHNOLOGY" by Selena Hill, 2/12/18, BlackEnterprise.com

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