Forestry, one of two views of compost sifter in operation, materials yard, 1938
Mammoth Cave National Park; National Park Service
Forestry, one of two views of compost sifter in operation, materials yard, 1938
Mammoth Cave National Park; National Park Service
Forestry, moving compost beds for aeration and reduction of groundspace, 1938
Mammoth Cave National Park; National Park Service
Bins constructed at wood yard at utility area for compost, 1939
Mammoth Cave National Park; National Park Service
Forestry, view of compost one year old, before rubbing materials yard, showing tape measure, 1938
Mammoth Cave National Park; National Park Service
Forestry, view of compost one year old, before rubbing materials yard, showing tape measure, 1938
Mammoth Cave National Park; National Park Service
Forestry, typifying routing systems of those trees which are accorded compost feeding and cultivation, tree near Mammoth Cave arch, 1938
Mammoth Cave National Park; National Park Service
Forestry, black dirt being dug from pond edge, to be hauled to materials yard and used for bedding down compost, 1938
Mammoth Cave National Park; National Park Service
Forestry, removing weeds from compost bed and placing them on another compost bed to be used in the future as fertilizer, 1938
Mammoth Cave National Park; National Park Service
