South Yorkshire Coalfield

The South Yorkshire Coalfield is defined by a triangle lying between Barnsley, Doncaster and Sheffield, though a few mines within the coalfield lie outside this area. It is part of the larger Midland coal field which stretches from Nottingham in the south to Bradford and Leeds in the north. Its western boundary is defined by the outcropping of the coal seams in the foothills of the Pennines and in the east by the descent of the coal-bearing strata under overlying rocks as they approach the North Sea.

Geology

The coal bearing rock strata or coal measures that make up the South Yorkshire Coalfield outcrop in foothills of the Pennines and then dip gently downwards from west to east. This area is known as the exposed coalfield. The coal measures are carboniferous rocks laid down between 290 and 354 years ago. West of Doncaster the coal measures are overlain by younger rocks, permian limestone [BGS, page 1] , and the area to the east of this is referred to as the concealed coal field [Hill, page 14] .

The northernmost extent of the South Yorkshire Coalfield is marked by the change of the fields richest and highest grade coal seam, the Barnsley Seam or Bed, to a thin seam of inferior coal. This occurs to the north of Barnsley [Hill, page 14] . The southern limit was marked by the Barnsley Bed losing its coking qualities [Hill, page 22] .

The structure of the coal field is not significantly affected by faults except along the River Don between Sheffield and Mexborough. These faults give rise to the Frickly and Maltby troughs where the coal measures are thrown down and lie deeper than other parts of the coalfield.

Coal type & seams

The coal found in the South Yorkshire Coalfield was a bituminous coal that was generally used for the production of coal gas and coke [Hill, page 20] . The coke was then used for iron and steel manufacture. Some seams produced coal suitable for raising steam, i.e. it had a low ash and sulphur content. Finally other seams produced coal for household use.

The most famous seam in the South Yorkshire Coalfield was the Barnsley Seam or Bed [Hill, page 21] [BGS, page 17] . This seam which was up to 3 metres thick in places provided a significant amount of the coal produced by the coal field [Hill, page 22] . The Barnsley seam coals properties varied through the depth of the seam. The top of the seam was a soft bright coal, the middle section known as the "hards" was a dull hard high quality coal suitable for raising steam. The bottoms was another band of bright soft coal called "bottom softs" [BGS, page 55] .

Other famous seams include the Parkgate seam that produced mainly gas coal, the Silkstone seam which produced coal suitable for many purposes and the Swallow Wood seam that produced household and gas coal [Hill, page 22-23] .

For details of other seams see Coal Seams of the South Yorkshire Coalfield

History of the development of the coalfield

Pre 19th century

There is evidence of coal mining in the field as far back roman period. Documentary evidence of mining around Barnsley, Rotherham and Sheffield dates back to the 1300s. An example of this is permission granted by Sir John Fitzwilliam in 1367 for mining to take place on his estate near Elsecar south of Barnsley [Clayton, page 1] . These mines were shallow shafts or adits that exploited the coal seams where they outcropped. The coal would have been used locally as a heating fuel or in the production of iron. This small scale mining persisted well into the late 1780s when the 4th Earl Fitzwilliam's colliery at Lawwood had only 19 "picks" or miners. The reason for the delay in development when compared to the coalfields of Northumberland and County Durham was that the area had poor access to water transport which was the only economic method of transport prior to the development of the railways [Hill, page 16] .

The first area of the coalfield to gain access to improved transportation was the southern edge when the River Don Navigation was canalised as far as Tinsley near Sheffield by 1740. This allowed the collieries near Rotherham to export their coal east to the English coast and beyond and west Sheffield. By 1769 300,000 tons of coal were exported from the southern area of the coalfield. The colliery owners to the south in Derbyshire cut the Chesterfield Canal from Chesterfield to join with the River Trent nr. Gainsborough in 1777 which allowed them to compete directly with the South Yorkshire Coalfield. This in forced the colliery owners in Southern Yorkshire to improve their access to the sea. They planned a canal running from Wakefield south through Barnsley to the River Don at Swinton east of Rotherham. The canal called the Dearne & Dove Canal was started in 1793 and completed in 1796. The canal with branches to Elsecar and Worsborough allowed collieries through the coal field to be expanded. This can be seen with sinking of the Elsecar New Colliery by the 4th Earl Fitzwilliam.

The 19th century

The coal trade in the early 1800s suffered several periods of recession but as the British railway system expanded during the 1840s & 1850s the market for coal increased markedly and transport of the coal using the railways improved distribution of the coal further boosting the trade. This increase in demand drove colliery owners to move further eastwards away from the shallow coal seams sinking deeper shafts as the Barnsley seam, which was their main target dipped downwards.

During this period the coalfield suffered a series of fatal explosions as the available mine ventilation techniques were unable to safely deal with large quantity of methane or firedamp produced by the Barnsley seam in the deeper and larger mines being sunk. The contemporary colliery ventilation techniques were often poorly applied and even in collieries where the ventilation was well engineered the technique had a significant flaw. The flow of air was controlled by 'traps' or doors opened and closed by children when the tubs of coal passed. The children, being children, did not always close the doors when they should, resulting in explosives gases building up in the working parts of the colliery often with fatal consequences.

Some notable explosions include are detailed further in the article

The latter half of the 19th century was marked by further expansion eastwards. The opening of these collieries was possible as improved understanding of the geology of the coalfield allowed mining engineers to be more confident about the sinking collieries in previously un-mined parts of the coalfield. Improvements in drilling techniques allowed deeper bore holes to be sunk so the engineers had a better understanding of the coal deposits and this gave confidence to the speculators as to possible returns. The costs required in the deeper pits required more coal to guarantee a suitable return, therefore mines were set up in rural areas where large royalties could be negotiated with little in the way of buildings on the land to minimise the amount of coal that had to be left to prevent subsidence. The lack of population in these areas meant that the colliery owners had to provide accommodation in the form of pit villages and the quality of this varied considerably between collieries.

Early 20th century

At the turn of the 20th century many of the collieries on the exposed coalfield had exhausted the Barnsley seam in their royalty and rather than abandon their investment and experienced workforces many owners sank deeper shafts to exploit the seams that lay beneath the exhausted Barnsley seam such as the Parkgate and Swallow wood seams. Some examples of this include Cortonwood, Manvers Main and Elsecar Main At this time the first collieries on the concealed coalfield were opened such as Bentley & Brodsworth Main. These new collieries suffered many problems during the sinking of their shafts through wet sandstone and quicksand. It was during 1929 as these deeper pits sunk in the early years of the 20th century came into full production that the South Yorkshire Coalfield produced its record amount of coal 33.5 m tons 13% of Britain's coal output that year.

The early part of the century was marked by increasing competition in foreign markets for the coal and as a result some mines were amalgamated to reduce costs and improve competitiveness. Outside the coalfield technology changes also reduced the size of markets as ships moved increasingly to oil as their primary fuel source, and train routes were electrified. Despite the amalgamations the industry was still seen as inefficient and in order to promote more efficient development of what was still a vital resource the Government in 1938 nationalised the coal reserves. During the Second World War, to ensure production levels were met, conscript labour redirected from the armed forces, the Bevin Boys, was used in the collieries.

Post War

Following the end of the war the whole of the British coal mining industry was nationalised in 1947. Whilst this was done in, the words of the Labour Party Constitution, "To secure for the workers by hand or by brain the full fruits of their industry and the most equitable distribution thereof that may be possible upon the basis of the common ownership of the means of production, distribution and exchange, and the best obtainable system of popular administration and control of each industry or service." as part of a wider process of nationalisation it did allow the coalfield to be modernised and streamlined in a way that had not been achieved in the previous decades. The National Coal Board management did in the 40 years following nationalisation, close inefficient and worked out collieries, amalgamate and combine other collieries to form larger production units where significant assets such as skip winders and coal washing and grading facilities could be used by several collieries and open new drift mines which could be fitted with the latest equipment. The results of these actions carried out against a backdrop of a volatile and declining market was that by the time the collieries of South Yorkshire were sold to private owners in the mid eighties the coal they produced was some of the cheapest in the developed world.

Post privatization

Post privatization pits continued to close as the market for coal in the united kingdom contracted with the development of gas fired power station in the dash for gas and the continued use of cheap coal imports in the electricity generating business.

Collieries

There are currently no coal mines operating in the South Yorkshire Coalfield, though some colliery shafts remain in use as pumping stations to reduce pollution from the abandoned workings.

The following is a list of notable collieries.

*Elsecar Collieries Coal mines operated in Elsecar from around 1750 until 1984 when Elsecar Main closed following the miners strike.
* Bentley Colliery was the first Colliery to be sunk on the concealed coalfield. The first sod was cut on 16 March 1905
* Caphouse Colliery: was sunk in the late 1770s and continued to supply coal until 1985. It then became the Yorkshire Mining Museum and later the National Coal Mining Museum for England. [Taylor, page 60 ]
* Ferrymoor or Riddings Drift: This was the first of the National Coal Board drift mines. It was sunk in 1969 and was the first British mine to produce over 8 tons per man per shift. It closed in 1988 [ Hill, page 240 ]

Labour relations

There has been conflict between the mine owners and the miners for over 200 years. A strike by miners in 1792 for higher wages at the Duke of Norfolk's collieries near Sheffield is an early example.

During the nineteenth century a variety of unions or associations such as the Mining Association of Great Britain & Ireland, The Miners National Union and the Miners Federation were formed to campaign for improved wages and better working conditions. They were largely unsuccessful. Two large scale strikes took place during the century including actions in 1842 and 1893. The strike in 1893 was the result of a 25% wage cut by the mine owners which was eventually restored but not before two miners were killed by soldiers at Featherstone.

The twentieth century brought further strikes in 1912, 1921 and the General Strike in 1926. These all generally failed to bring about any improvement in pay and conditions.

Following nationalisation in 1947 working conditions improved but pay fell behind national averages. Successful strikes in the early 1970s resulted in wage improvements. However, as the market for UK coal declined and collieries closed, tension between the miners and the government increased and in 1984 a large scale strike started. The colliery closure that started the strike was the closure of Cortonwood, in South Yorkshire. The strike's aim to preserve miners' jobs was not met as colliery closures continued and by 2006 all the pits in the South Yorkshire Coalfield had closed.

Mining disasters

The South Yorkshire Coalfield has suffered some the worst mining disasters in Great Britain and the largest disaster in terms of fatalities in England.

Some notable disasters either for their effect outside the region or scale:

*Huskar Pit Disaster: The pit flooded during a rainstorm in 1838 and 26 children were drowned. This disaster led to the 1842 commission on the employment of children and women in mines which resulted in the banning of female and child labour underground.

*Warren Vale Colliery: A firedamp explosion caused by naked flame in 1851 resulted in the death of 52 miners. At the inquest the coroner insited on there being an increase in the number of Mines Inspectors in the district.

*Lower Elsecar Colliery: A firedamp explosion in 1852 resulted in the death of 12 miners. In response to this explosion Benjamin Biram the collieries mining engineer fitted the first underground fan to improve ventilation

*The Oaks explosion: A series of firedamp and coal dust explosions that resulted in the death of 361 men and boys. This was the worst colliery disaster in the United Kingdom until the Senghenydd Colliery Disaster disaster in 1913 and is to date the worst in England

References

ources

*"The Newcomen-Type Engine at Elsecar, West Riding" by A.K. Clayton: Volume 35 (1962) "Transactions of the Newcomen Society"
*"The South Yorkshire Coalfield A History and Development", by Alan Hill, Published in 2001 by Tempus Publishing Ltd ISBN 0 7524 1747 9
*"South Yorkshire Pits" by Warwick Taylor, Published in 2001 by Wharncliffe Books ISBN 1 903425 84 3
*"Geology of the Country Around Barnsley", by British Geological Survey Published in 1947 by Her Majesty's Stationery Office ISBN 0 11 880583 5


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