I don't touch magnetrons at all, they stay just where they are.
I wouldn't recommend new scrappers touching them, plenty things to make a little money from,
a magnetron isn't gonna make any difference, they should wait until the're more experienced scrappers,
then they'll make the decision for themself, to not bother with them, go for a walk instead and pick up something else in that time.
value adding is one thing, taking silly risks for a few cents is desperation.