Talking of the lower school, who used the Pit canteen to get their tuck?
It was the nearest tuck shop really and sold a super-big Bath-bun-cum-rock-cake for the easy on the pocket money price of just 1d yes one pence old money folks. The down side was psyching yourself up to breathe in hard and deep, pick your way through the thick fog of cigarette smoke chat and chesty coughs and hope there wasn't a big queue get your confectionary prize and beat it quick into the wonderful fresh air outside wondering how miners lungs stood it all.
They didn't of course; their lungs died of pnumachoniosis and lungcancer.
The river died too! Once, there was a guy regularly fishing for trout by the waterfall under the colliery bridge. Then one day it turned yellow, then brown and finally shale black. Upper Maerdy the final Rhondda mine was being sunk. It would be years before rivers would be clean for good never again to be polluted in the cause of industry.