The mining past -Over 70,000 tons of copper ore and 530 tons of tin were being produced from 1820-1840 along with other minerals like zinc and iron. In the mid 19th century profits of over £110,000 were achieved per year which today would be the equivalent of £3.7million. Clay mining soon took over from tin and copper mining as the principal industry in the area, and this eventually became an enormous contributor to the growth of St Austell. The clay industry really only came into its own during the mid 19th to early 20th century, at a time when the falling price of tin and other metals forced East Crinnis and many mines to close down. At the turn of the 20th century East Crinnis was a small farm with only a few cattle, the main income for the Farm was by horse and cart used to help transport clay to the busy port at Par harbour.