William “Rad” Radlinski, 91, a former acting director of the U.S. Geological Survey, died last month, The Washington Post reported.

Radlinski, known as “Rad” at USGS, mapped Europe during World War II for the U.S. Army. Following his service and college, he joined the USGS in 1949. During his 30 years there, he held several leadership posts, including program planning and research activities in the topographic division, associate chief topographic engineer, USGS associate director and acting USGS director for two years.

He also held leadership posts in professional societies, including as former president of the American Society for Photogrammetry and Remote Sensing and the International Federation of Surveyors. He was also executive director of the American Congress on Surveying and Mapping.

According to his obituary, he was co-chairman of a joint U.S.-USSR committee on environmental protection in the oil and gas industry. In 1963, Mount Radlinski, a 9,020-foot mountain in Antarctica, was named after him. He also received the U.S. Department of Interior’s Distinguished Service Award.

Click here to see his obituary.