today the new galleries atop the quarry at Mynydd llandegai the waste is being used to fill in the the quarry the quarry was started by the Pennant family in 1780 history on here,
one of the bogeys used in the slate Quarry these bogeys had the welsh cob to haul them about on the galleries late on they had steam trains to haul the bogeys from sebastapol to the cutting sheds then diesel engines until the mid 21 century when ramps where made from one gallery to the next and dumper trucks like today are used to haul the slate thus making sebastopol workings unnecessary to haul slate,, but most like had a use to lower working quarrymen to working lower levels,
I can also remember A pulley that was used to Haul slate from one side of the quarry across to the other with single bogey all the working cutting sheds are on the south side of what was once the largest working quarry in the world employing 3000 men Penrhyn Quarry - Wikipedia, the free encyclopedia
Mr a here was employed by Mc alpine one of the crew of of local craftsmen who built the new office in the office foyer that covered the whole of the first floor we showed the uses of the welsh slate from roofing slate to the billiard table tops.
one of the slate exhibit walls to the front of the office this was once the view point for visitors to see the depth of Quarry in them days there was no water to the base
Another exhibit of welsh slate craft.
the Quarry from the top of Mynydd Llandegai. slate was in common use as stock fencing,and land deviding fence most of the green mountain land in Mynyd llandegai is crown land . meaning that any one with a cottage could keep stock on that land even Penrhyn tenants as far down the mountain as Tregarth had use of this land,