 In the 'Great New Quarry' Raven Rock and Garret Quarries became one massive quarry, operating as an open hillside gallery quarry, with the lowest two levels being accessed by tunnels.Harriet, Morgans and Sofia quarry are all still identifiable as separate pits today, whilst Braich quarry became a large working of three contiguous smaller pits.Below this, The galleries of Victoria and Wellington were joined along the hillside, and continued downwards in two separate main workings