23/04/1982
Metallica appears as a 5 piece band, Brad Parker on guitar

14/06/1982
Metal Massacre released (Metal Blade Records), Metallica's first appearance on vinyl

06/07/1982
No Life 'Til Leather demo recorded

10/12/1982
Ron McGovney quits Metallica

28/12/1982
Cliff Burton's first rehearsal with Metallica