Dont dig straight down (well duh)
I dig straight down all the time. I never die
Strip mining is effective.
Dig at 40 degree angle. So make stairs. On later 12 you'll find diamonds
STRIP MINING
Don't use TNT because some nearby blocks can be lost from the explosion, including ores.
Ummm? Always dig straight down? That’s how it works right?
If you do dig straight down, be wary when getting to y=25 I'd say. That's where I usually see lava become more common.