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The Manchester Coalfield is part of the South
Lancashire Coalfield The Lancashire Coalfield in North West England was an important British coalfield. Its coal seams were formed from the vegetation of tropical swampy forests in the Carboniferous period over 300 million years ago. The Romans may have been the f ...
, the coal seams of which were laid down in the Carboniferous Period. Some easily accessible seams were worked on a small scale from the
Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
, and extensively from the beginning of the
Industrial Revolution The Industrial Revolution was the transition to new manufacturing processes in Great Britain, continental Europe, and the United States, that occurred during the period from around 1760 to about 1820–1840. This transition included going f ...
in the early 19th century until the last quarter of the 20th century. The
Coal Measures In lithostratigraphy, the coal measures are the coal-bearing part of the Upper Carboniferous System. In the United Kingdom, the Coal Measures Group consists of the Upper Coal Measures Formation, the Middle Coal Measures Formation and the Lower Co ...
lie above a bed of Millstone Grit and are interspersed with
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...
s, mudstones,
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especia ...
s, and
fireclay Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of alumin ...
s. The Lower Coal Measures occupy the high ground of the
West Pennine Moors The West Pennine Moors is an area of the Pennines covering approximately of moorland and reservoirs in Lancashire and Greater Manchester, England. It is a Site of Special Scientific Interest. The West Pennine Moors are separated from the main Pe ...
above Bolton and are not worked in the Manchester Coalfield. The most productive of the coal measures are the lower two thirds of the Middle Coal Measures where coal is mined from seams between the Worsley Four Foot and Arley mines. The deepest and most productive collieries were to the south of the coalfield. The coalfield is affected by the northwest to southeast aligned Pendleton Fault along the Irwell Valley and the
Rossendale Valley The Rossendale Valley is in the Rossendale area of Lancashire, England, between the West Pennine Moors and the main range of the Pennines. The area includes the steep-sided valleys of the River Irwell and its tributaries (between Rawtenstall ...
anticline In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the ...
. The Coal Measures generally dip towards the south and west. Numerous other smaller faults affect the coalfield. The Upper Coal Measures are not worked in the Manchester Coalfield. The early coal pits were dug to the shallow seams where they outcropped, particularly in the Irwell Valley and in Atherton. The early collieries were adits or
bell pit A bell pit is a primitive method of mining coal, iron ore, or other minerals lying near the surface. Operation A shaft is sunk to reach the mineral which is excavated by miners, transported to the surface by a winch, and removed by means of a ...
s exploiting the Worsley Four Foot Mine. Deeper mines were sunk when steam engines were developed to pump water from the shafts. Most collieries to the east of the Pendleton Fault had closed before 1929. A group of independent companies formed
Manchester Collieries Manchester Collieries was a coal mining company with headquarters in Walkden formed from a group of independent companies operating on the Manchester Coalfield in 1929. The Mining Industry Act of 1926 attempted to stem the post-war decline in coal ...
in 1929, to work the reserves of the coalfield.


Coal seams of the West Manchester Coalfield

In this part of Lancashire a coal seam is referred to as a mine and the
coal mine Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron fro ...
is a colliery or pit. The beds of coal in the Coal Measures are separated by layers of
gritstone Gritstone or grit is a hard, coarse-grained, siliceous sandstone. This term is especially applied to such sandstones that are quarried for building material. British gritstone was used for millstones to mill flour, to grind wood into pulp for ...
s,
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...
s,
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especia ...
s and mudstones of varying thicknesses. The mines were frequently named after their thickness – Yard, Three Quarters – or given local names in the areas in which they were first worked.


Central Manchester Coalfield

The eastern part of the coalfield under Manchester is isolated from the rest. The sequence of coal seams corresponds more closely with that of the Oldham Coalfield than the rest of the Manchester Coalfield. Workable seams are close to the surface and coal from the deep Roger mine was considered to be of the highest quality. The Upper Coal Measures above the Worsley Four Foot mine, known as the Parker mine, are worked in this part of the coalfield and known as the Bradford Group, above which is the
Ardwick Ardwick is a district of Manchester in North West England, one mile south east of the city centre. The population of the Ardwick Ward at the 2011 census was 19,250. Historically in Lancashire, by the mid-nineteenth century Ardwick had grown f ...
Group. The coal seams of the Bradford Group are the Two Foot, Doctor, New, Yard, Bradford Foor Foot, Three Quarters and Charlotte mines, the Charlotte being closest to the surface. The Openshaw mine above the Charlotte was worked for fireclay. Below the Bradford Group and the Parker mine are the Top, Middle and Deep mines and below them, the Roger mine. The Top, Middle and Deep mines correspond to the Major, Bland and Ashton Great mines in the Oldham Coalfield. The Crumbouke mine in the western coalfield is the Roger mine in central Manchester.


See also

*
List of collieries in Astley and Tyldesley A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby unio ...


References


Citations


Bibliography

* * * {{refend Coal mining regions in England Geology of England History of Greater Manchester