Who was kicked out of metallica for drug abuse?

Dave Mustaine. He was not kicked out for drug abuse but for being Violent and being a heavy drinker. Also none of them did drugs, all they did was drink.

Even though Dave Mustaine was a drug addict, the main reason he was kicked out is because of his violent reaction to alcohol.

actually Dave was drunk and laid James out and claimed that one of them kicked his dog in a violent drinkin binge