Acid Waste 1942
As the United States was entering the World War II, there was a large expansion of building in the Brooklyn Navy Yard. Underground new industrial systems of drainage and supply were needed. This cover was of a design used over several systems, with its particular functions duly noted.
The wide gutter grid design with a san-sarif text banner in the center was used extensively in the Brooklyn Navy Yard for various systems. Some of the covers seem to have been hand dated by workers.
Special sewer line.
Brooklyn Navy Yard near Morris and Fifth Streets.