pare mining in 18th to 20th century Grinding Mill China
Mining extraction Derbyshire Caving Club. 26 Dec 2010,, main periods Bronze Age and earlier o Roman o Medieval o Post medieval o Mid 19th century o 20th century, Mining in the late 17th and 18th centuries used iron picks which leave very distinctive wallmarks Another, From the data, we can, for example, deduce that one pare (4, 5 or 6 men and boys) could drive two fathoms