Brooklyn Navy Yard - Photo #39 - Shipuilding and repair

Photo: NYHS via [14]
"BNY's blast furnace worked 24 hours a day. Here a piece of structural steel is fed into the furnace to be melted down. As part of the war effort, Boy Scouts collected scrap metal* from Brooklyn neighborhoods and delivered to the BNY scrap yard. That metal came to the blast furnaces too."[14,p.87]
* The WPA did this too, nationwide.