Cathodic Protection testing and design. I do it because it makes my brain work, I normally work when it is nice outdoors, travel to a lot of neat places and make lots of money.
@acpguy Ah-ha! I had to look that one up! Interesting even though at first I read Catholic... That threw me, and I said WHOA!....but I recovered when I reread it! Ohhhh Cathodic! Metals! Gotcha!
