 Well, there were essentially two very imminent metallurgists, Markham, John Goldack and Markham Bibby, who were together. But their main specialty was welding. And they, in fact, built a very advanced electron beam welder at Carlton, which I've been successfully for many years. But eventually they closed that door in me and run for 20 years or so. So there was, there were really only two metallurgists at Carlton, but they were both at first grade. And they did a lot of collaborative work with atomic energy and people like that. In fact, John Goldack is still active at Carlton. He's a year younger than me, but he's still there. He's on the surf side and has a major for self-defense. And I went the opposite way. I wasn't the best myself in research for the entire time. I still work with students in teaching sense, but I didn't want to be in the search because I couldn't go away and need my graduate students. Tell me, what else would be on that metallurgical research at Carlton? But the main thing that comes to mind, certainly, is welding. That they would have sent to the Extern City in that period.