The war ended before the were shipped, so they just dumped them in the pit, crates and all.
That's the story anyway.
Never heard that one!..............................
I heard a similar tale about ammuntion and Camp Roberts, California.
At the end of the war, they had to get rid of a lot of ammunition, so they dug a big trench, piled in the ammunition (in its packaging) and heaped the dirt back over it.
In the night, it was said some enterprising soul dug down and recovered a few ammo cans of ammo.
The recovery was discovered, so they dug a bigger trench, deeper, and bulldozed everything into that one, nice and deep, so it would be hard to recover.
The exact same legend exists about Stead Air Field, here in Nevada, when in was closed and converted to a civilian field.
There is also the Harley legend about a warehouse full in some random New England state.