Hadn't checked the Bushwick and Evergreen branches for meat packing houses/dairy plants.
Bohack's wouldn't have been a meat packing plant. As Bohack's was a chain of supermarkets, it would most probably have been a main warehouse. All sorts of products would have been brought in there for local distribution, like the Waldbaum's warehouse east of CI and the earlier Hills warehouse at Pineaire.
The A&P warehouse was along the Central extension east of Clinton Road. After WWII it moved further east into newer warehouse facilities, neighboring General Bronze, acquiring a joint station stop with low platform there called "A&P Bronze." (Passenger service ended in 1953.)
Dave Keller