I spoke to an exploration driller today.He confirmed 30-40m per...

I spoke to an exploration driller today.
He confirmed 30-40m per shift depending on the ground is ideal for a standard NQ size Diamond drill rods.
Hard ground will wear out your drill bit fast.
So very hard on the crew pulling rods out to continually change bits. He did mention Basalt makes for easy drilling.
Also normally if you don’t want to F##K around is his words, then you get the RC rig in and punch down a few hundred meters in a shift or 2, collar it then send down the DD to pull out the Hollywood tooth paste.