Keystone Saw Works
Henry Disston's Keystone Saw Works was located along the Delaware riverfront in Tacony. As with many factories located along rivers or smaller streams, this plant likely dumped any liquid waste from its industrial processes directly into the river. Note the smoke emanating from the plant's many smokestacks: in 19th century engravings, smoke meant activity, which equalled prosperity.
The Keystone Saw Works. [Henry Disston & Sons] [Delaware River] From "Philadelphia and its environs, and the railroad scenery of Pennsylvania." Philadelphia: J. B. Lippincott & Co., 1875. Page 88