Yes... true
I saw the same comment on another thread and called his partner Keith earlier. He had been fighting cancer for the past couple years. I didn't know him well, but since I work with fridges, I had become email pals. I went to see him earlier this year and was overwhelmed by the knowledge that I will likely never have. Remember to show your little tricks to the younger collectors or the knowledge will die with you.
Before I first spoke with Mike, I was shocked that I could hardly find one guy in St. Louis that knew that so2 was a refrigerant.