Bloomdale China Clay and Stone Works, St. Stephen-in-Brannel, Cornwall, UK (b/w photo)

Unknown photographer A view showing a launcher used to transport the clay stream to a sump, at Bloomdale China Clay and Stone Works This photograph forms part of a set within the album documenting the china clay industry of Cornwall, particularly focusing on the area around St Austell. China clay - also called kaolin - was used to make porcelain. The china clay industry was one of the main extractive industries in Cornwall. The images are accompanied by handwritten notes and descriptions of the processes involved in the production of china clay. Together they form a fascinating insight into the industry in the early-mid 20th century. The image numbers that form this set are ALB93/05/115 - ALB93/05/150. The caption by this image reads: "The clay stream, purified now of the coarser material but still containing some fine mica, passes through a portable 'launcher', or trough, into a rectangular pit known as the 'sump'."