I don't actually think the plan is just a blanket coverage over the entire slate belt(s), Presumably it will center on places like Dinorwic, Dorothea, Cwmorthin, Rhosydd and Maenofferen, probably some others like Moel Fferna, and stuff down Corris way.
The only really viable option out of those is Maenofferen for continued working.
I highly doubt it will affect any current working quarries, considering its places like the slate museum behind the bid I HIGHLY doubt they would want to affect any current operating quarries considering how many ex quarrymen work at the museum.
Wales only major industry now IS tourism, I'd like to be wrong but i'm not convinced we're suddenly going to get an influx of quarries wanting to start up again or even creating a new quarry somewhere.
FILTH - Think this is a playground? Think again...