tempsafety
Small plugin someone made when someone in his guild complained he overcooked a roid.
It turns off beams if roid is hotter then specified temperature. You need to have the roid targeted of course.

Commands:
/tempsafety or /ts and arguments:
on/off - turns whole thing on/off
currentmax - shows current maximum temperature
setmax - sets maximum temperature
notify on/off - turns notifications when beams turn off, on/off
http://www.phoenix-alliance.info/upload/tempsafety.zip

I use Autojett for this.

-- tsreknor

I think they maybe one and same just updated form

Still trying to figure out how to put file in lol

TempSafety is good, but I recommend MAID for this, it has the ability to add custom items to the auto-jettison to, nice to have if you're collecting other things than ore (e.g farming hive skirms).
I had a problem with the default MAID and [...] crashing the game recently, but using Lisa's modified MAID posted in the plugin section works fine.