There's an old munitions plant to the SW of us. Kingsbury, IN. Similar setups.
Rails in, then rails branching out on each side at angles away from the mains. Many smaller buildings spread out, so if one blows up, they all don't blow up.
After WWII, my father had several jobs working on munitions plants designs and redesigns in Kentucky, Tenn, OH, and IN. He took me over to Kingsbury before many of the old buildings were demolished. There were pits in the floors and exit slides from the 2nd floors. If there was an incident, you were supposed to jump in the pit so the explosions would roll over you instead of through you, or jump onto the slide and hope you make it out.
While the ordinance factories are mostly gone, there are now many small businesses in the old warehouses. Some new construction, and the east half has been turned into a great fish and game area. There are still 'contaminated' areas where live ordinance can be found. Plenty of signage to keep out.
Of course, Boy Scouts that were camping there in the 70s ignored those signs, so I'm told.
