CCC enrollees constructed many buildings for use by the National Park Service at Mammoth Cave. Many of the buildings they constructed are still in use by park employees today. The enrollees spent 5,450 man-days constructing 6 houses for park personnel, 400 man-days constructing bathrooms for the campground area, 1,750 man-days constructing an outdoor amphitheater, and 3,300 days constructing a machine shop. Other projects the enrollees completed for the park buildings and grounds include landscaping, roadwork, surveying, and building a ferry house.

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