Dang. Refinery pictures and my husband has left for work (in "his" refinery) only some 10 minutes ago ... he would have loved to see these, too!
And I only read "Industrial vapours" (ok, without the u) by Pursuer and knew I had to go take a look else I'd miss something good! Now I am very happy that I did take this look. Will come round for more looks, I am sure!