Mule-drawn plow at groundbreaking ceremony at EROS
Detailed Description
Undersecretary of the Interior William Pecora (from left, wearing hat), Merlyn Veren and USGS Earth Resources Observation and Science (EROS) Center Director Glenn Landis lean into the mule-drawn plow to turn earth at the EROS facility groundbreaking on April 14, 1972, near Sioux Falls, South Dakota.
Sources/Usage
Public Domain.