Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,106 pages of information and 231,598 images on early companies, their products and the people who designed and built them.
H. D. Pochin and Co Ltd, clay producers, of Worsley Street, Salford.
Henry Davis Pochin invented a process using ammonium sulphate and alumina as a low cost alternative to alumstone in the production of alum cake used in the manufacture of paper. The process required china clay. Pochin bought several china clay mines in Cornwall for this purpose.
In time H. D. Pochin and Co became one of the three largest British producers of china clay