It is always useful to learn from other peoples failures and disasters in our futile efforts to prevent repetition of their mistakes. Although this site is primarily about microwave equipment related failures, I'm fairly sure something useful can be learned from the photos:
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558