OOH! Neat! I looked on my mobile phone enough to get a sense of what this is.

I'm not in the petroleum industry, but about 45 years ago I was mesmerized at an energy fair at my elementary school by this Exxon magazine that showed the refinery flow with a bunch of little dots: https://archive.org/details/p-2330663/P2330670.JPG

How awesome that you were able to find this! I’m only missing a couple! The SRU is my final hurrah that I’m trying to get the play dynamic right. Balancing air demand with sulfur load without overwhelming the screen with bars and widgets.