How To Scrap A Microwave Safely
i have had dozens in loads broken down to basic metals and never set the radiation sensors off. you dont need to worry there.
the berylium in them is a valid concern. but as stated prior, use your head and dont break and breath it. rubber gloves and a cheap mask if your paranoid. just washing your hands after handling can go a long way too.
the other concern not mentioned is mercury switches. while rare in mirowaves can be present. these again use rubber gloves and dont break them and your fine.
you get wire (usually copper but can be aluminum in high voltage locations) some sheet aluminum, a couple small pieces of copper, brass, a transformer ( check for aluminum windings...) a fan or two, electric motor or two... a low grade board or two and mostly shred.
broken down this far you will not have issues. many yards do not want the magnatron due to berylium. otherwise its all good money.
many people break the magnatrons down and toss them berylium and all in shred. i cant say i agree with this approach since most of that is shredded or melted releasing the toxic materials down stream to some poor worker that probably doesnt even know its there much less the risk.
mine go in a bucket and to hazardous waste disposal transfer station. not best solution but at least they are not killing someone or making someone down stream sick. have not found better solution yet so it works for now. i also make sure they are aware of exactly what is in the load when it goes for disposal. clears my concious a bit about having to dispose of it this way.