|Date||12 November 2011|
|Location||Penrhyn Quarry, Bethesda||SH 61531 65473; 53.16830°N, 4.07289°W|
These rubbish wagons have been left abandoned in a gulley in the spoil heaps on the west of Penrhyn Quarry.
The four eyes (one in each corner above the wheel) allowed the wagon to be lifted by a Blondin (aerial ropeway). The wagons were open at the front so that when propelled along the track towards the end of the tip they would shed their loads of slate spoil when they hit the stop block at the end.
The spokes were curved to allow for differential cooling when the wheels were cast. As the spokes cooled more quickly than the hub and rim they would be under tension. This tended to cause straight spokes to crack, but curved ones could absorb the stress by bending slightly as the wheel cooled.