It's home time for men and women at an imposing but unidentified workplace - or two?

These two shots make an odd contrasting pair. Found together on the same roll, with no accompanying information, each shows a very different workplace but a similarly grey, damp day.

In the first shot, white collar workers (managers, clerks, secretaries) leave a classical office building. What is presumably a name plate by the door is infuriatingly unreadable. The second shot shows us what is clearly a mill or factory and its own workers. Where are we? Are these two entrances to the same building? Two different buildings on the same site? Are the two scenes even related at all?