Dear PoPville

What the Helen of Troy Is This Building?

“Dear PoPville,

What is the building with two tall smoke stacks at the western end of the actual Navy Yard, just across from La Famosa? For the several weeks I have lived nearby, there has been nothing to see here. Now, for the second day in a row, there is a huge amount of smoke coming out at the bottom of the building (not even out of the smoke stacks) and a very loud whir of machinery.

Of note, it is not Building 197 (about which there is info online), it’s the one just west of it.

Any idea what this is?”