Holland opened a new quarry above Lower Quarry at Cesail. In 1827, Holland gave over control of this company to his son, also called Samuel Holland. This quarry was variously known as Hollands Quarry, Gloddfa'r Gesail and finally Upper Quarry. In 1839 Holland's Upper Quarry became one of the first to send slate on the newly opened Ffestiniog Railway. In 1842 as the original 21-year lease expired, Holland and the Welsh Slate Company negotiated a new lease from the Oakeley family. The new lease was granted provided some land was given up by both enterprises to allow a third quarry to be opened. This was Middle Quarry also known as Gloddfa Ganol and was operated by the Rhiwbryfdir Slate Company.