DEVS: Forging, could you give us your thoughts?

Here is what they said on regeneration.
So yes if you remove a block then the regen cycle starts again (4 hour timer). I think the real issue is if enough blocks are removed from a chunk (16x16 blocks so maybe a 3x3 hammer straight through which is 9x16 144 blocks) it can take over 24 hours for the blocks to regen then after that the resources regen.