Scott Griffith posted two pictures then added a third as a comment:
Actually, either there are other industries being served (plastics?) or the refinery generates byproducts that are carried in covered hoppers because among the many tank cars I saw in the area, I spotted a few covered hoppers. I saved a satellite image to capture the existence of a couple of covered hoppers because the Google images change to remain just a year or two old.
The following map confirmed my suspension that Whiting Junction was were B&OCT crossed the Pennsy to get to B&O's original passenger route to Illinois Central and Central Station.
|Mark Lasayko posted, cropped|
Scott Griffith posted four more images.