Presumably this will be at Oakeley and Dinorwic?
Am I imagining it, or has "Cwt y Bugail" (Manod) been let out; or are Welsh Slate working it themselves?
Are you having a senior moment Vanoord? I don't think you really meant Dinorwic!!
The 4 quarries owned by WS are Penrhyn, Oakeley, Penyrorsedd, & Manod (AKA CwtyBugail)
I have heard differing reports about Manod, to the effect that a) it has been leased out to a local group, b) WS and a local group are working it jointly.