Hello Webmeister,
I've now spent around 5 minutes attempting to unsubscribe without success. Perhaps you can do the deed for me rather than sending me in web loops. If you do not, I will make other arrangements for it to be done by others.
To my erstwhile fellow engineer-subscribers, all I can say is "do some homework before posting questions, or you'll render this potentially valuable resource worthless, because it wastes others' time and makes you look stupid". Many of the questions I see could be answered at least in part using the same internet resource but with an enhanced concentration and a reduced laziness - meaning USE YOUR INQUISITIVE BRAIN.
This is the main reason I have left the profession. Stupidity and laziness. I have mentored several young engineers over my career, but now call a halt to that. It's a pity, and I have not called myself an engineer for some years because of that taint.
Go with God my colleagues...