In the past, big blocks of slate had to be 'docked', or made smaller, using only chisels and mallets.
The smaller blocks were split, or 'rived' with a hammer and chisel, to make thinner slates (perhaps for roofs). This was a very skilled job, and at Gordon Greaves Slate, some traditional riving still takes place
The river has to listen out for a change from a dull to a ringing sound just before the slate splits.
Sound Test
Sculptors and stonemasons identify good quality stone by testing the sound each piece makes.
- Find out more about rocks and the sounds they make.
- Why do some rocks ring and not others? Find out here.
Cutting Edge
Although traditional techniques are still used at Gordon Greaves Slate, stone is also cut and shaped using computer operated machinery.