I am another type of "CAD Slave" - add P.M., Estimator and Injunear to the list for a complete description!!!
My new work deals with Warehouse Cold Storage + Logistics, so everything is either at freezing (0ºC), or below.
On the other end of the spectrum are Cooking Production lines, with huge processing kettles & boilers, then "Spiral Freezers" ("Tunnels").
Then there are the occasional Industrial Processing plants - like Plastics Manufacturing and such.
I will gather some job walk images to post here.
Texas Ranger
I do railway planning work which is quite unusual, but unfortunately I can't give any pictures since all I ever see is plans - I'm the CAD slave of the company. (That's right, they actually call me slave... one of the reasons why I won't get old in that company).
Man, I would really like to discuss your work with you!!!
Not sure if you know it, but i kind of like Railroads...

Scott