Public domain
Freeport Sulphur Company, Grand Ecaille, Louisiana. Conveyor belt which carries sulphur from vats to hopper where it is loaded on the barges
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineFreeport Sulphur Company, Grand Ecaille, Louisiana. Conveyor belt which carries sulphur from vats to hopper where it is loaded on the barges. 1943-01-01. Vachon, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.