Wheal Coates
Encyclopedia
Wheal Coates is a former tin
mine situated on the north coast of Cornwall
, England
, on the cliff tops between Porthtowan
and St Agnes
. It is preserved and maintained by the
National Trust
.
‘Wheal’ is Cornish for ‘mine’. The site was worked for centuries but the surviving buildings date from the 1870s when deep underground mining began at the site and were stabilised and preserved in 1986.
There are three engine houses that formerly housed Cornish engine
s. Towanroath Pumping Engine House (1872) was used to pump water from the adjacent 600 ft Towanroath shaft. Whim Engine House was added in 1880 to crush ore for processing. A calciner
dating from 1910–1913 roasted the tin to remove impurities such as arsenic
.
In 1881 138 people were employed at the site to mine a seam of tin just below sea level but this and a subsequent period of operation from 1911-1913 were not very successful because tin production was sporadic.
Tin
Tin is a chemical element with the symbol Sn and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group 14 elements, germanium and lead and has two possible oxidation states, +2 and the slightly more stable +4...
mine situated on the north coast of Cornwall
Cornwall
Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...
, England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
, on the cliff tops between Porthtowan
Porthtowan
Porthtowan is a small village in Cornwall, England, in the United Kingdom, and is a popular summer tourist destination which lies within the Cornwall and West Devon Mining Landscape, a World Heritage Site. Porthtowan lies on Cornwall's north Atlantic coast about west of St Agnes, north of...
and St Agnes
St Agnes, Cornwall
St Agnes is a civil parish and a large village on the north coast of Cornwall, United Kingdom. The village is situated approximately five miles north of Redruth and ten miles southwest of Newquay....
. It is preserved and maintained by the
National Trust
National Trust for Places of Historic Interest or Natural Beauty
The National Trust for Places of Historic Interest or Natural Beauty, usually known as the National Trust, is a conservation organisation in England, Wales and Northern Ireland...
.
‘Wheal’ is Cornish for ‘mine’. The site was worked for centuries but the surviving buildings date from the 1870s when deep underground mining began at the site and were stabilised and preserved in 1986.
There are three engine houses that formerly housed Cornish engine
Cornish engine
A Cornish engine is a type of steam engine developed in Cornwall, England, mainly for pumping water from a mine. It is a form of beam engine that uses steam at a higher pressure than the earlier engines designed by James Watt...
s. Towanroath Pumping Engine House (1872) was used to pump water from the adjacent 600 ft Towanroath shaft. Whim Engine House was added in 1880 to crush ore for processing. A calciner
Calcination
Calcination is a thermal treatment process applied to ores and other solid materials to bring about a thermal decomposition, phase transition, or removal of a volatile fraction. The calcination process normally takes place at temperatures below the melting point of the product materials...
dating from 1910–1913 roasted the tin to remove impurities such as arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...
.
In 1881 138 people were employed at the site to mine a seam of tin just below sea level but this and a subsequent period of operation from 1911-1913 were not very successful because tin production was sporadic.