Public domain
Storing butadiene. The pressure of the butadiene gaseous is so high that huge spherical tanks such as these can hold large volumes
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineStoring butadiene. The pressure of the butadiene gaseous is so high that huge spherical tanks such as these can hold large volumes. 1935-01-01. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.