Simply by adding another ‘row’ (making it a 5x6x5 rather than 5x5x5) you can ‘reuse’ the stone from existing miner to get double the generation
This is clever, if you add another column, (6x6x5) are you able to place 4?
I believe so, yeah.
Each stone miner only cares that there is a 5x5x5 block of identical “whatever” under it.
It doesn’t care that other miners are also “using” some of those blocks.
So yeah, you could tile this as much as you want, no need to create separate blocks for each.