Compagnie Des Mines De Béthune
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The Compagnie des mines de Béthune, sometimes called the sometimes called the Compagnie de Grenay after the name of the concession, was a French coal mining company in the
Pas-de-Calais Pas-de-Calais (, " strait of Calais"; pcd, Pas-Calés; also nl, Nauw van Kales) is a department in northern France named after the French designation of the Strait of Dover, which it borders. It has the most communes of all the departments ...
that was established in 1851 and nationalized in 1946. The company had 11 mines, each with one or more shafts for extraction of coal or ventilation. It had a large facility for screening and washing raw coal, and for producing coke and other secondary products. During
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
(1914–18) the front line crossed the mining concession, with the northern part occupied by the Germans, but despite constant shelling production of coal continued. Coke production peaked at 565,195 tons in 1928. The company had two thermal electricity plants, and operated of railway tracks. At its peak the company was one of the largest coal mining operations in the region, with 12,640 employees in 1945.


Corporate history


Early years 1847–59

Many soundings were conducted in the Pas-de-Calais from 1847, showing that the Valenciennes coal basin extended westward. The Société des mines de Béthune was constituted on 1 October 1850 to explore for coal in the Pas-de-Calais department. Founders were the Boitelle brothers, Constant Quentin, Petit-Courtin, André Courtrai and Courtray-Copin. The company explored the area west of
Béthune Béthune ( ; archaic and ''Bethwyn'' historically in English) is a city in northern France, sub-prefecture of the Pas-de-Calais department. Geography Béthune is located in the former province of Artois. It is situated south-east of Calais, ...
, which had not yet been surveyed by other companies, making the first drilling at Annezin, where coal was found on 26 April 1851. Further test drills at Fouquières,
Haillicourt Haillicourt () is a Communes of France, commune in the Pas-de-Calais Departments of France, department in the Hauts-de-France region of France. Geography A former coal-mining town, now a light industrial and farming commune, situated some south ...
and Bruay found coal at depths between . Based on the favorable results, the exploratory company was changed to an exploitation company on 25 September 1851. Another exploration company, the Société des mines de Bruay, was formed in 1851 to explore for coal in the region by Leconte, Lalou and others. The owners of the Mines de Béthune acquired shares in this company, and on 13 April 1852 the six partners of Bruay sold to Constant Quentin, Petit-Courtin, Joseph Tellier, Alexis Boitelle and Lobez, in their capacity of president and members of the society of Bethune, all the results of their soundings and their rights. M. Dusouich, an engineer from the Arras mines, advised the administrators of the Mines de Béthune to abandon work they had started in the Bruay and Béthune region and to establish themselves in the area between
Lens A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
and NÅ“ux. The first site was near the village of Bully (today
Bully-les-Mines Bully-les-Mines () is a Communes of France, commune in the Pas-de-Calais Departments of France, département in northern France. It forms part of the Communauté d'agglomération de Lens – Liévin, Lens-Liévin agglomeration community, which enc ...
), with 400 inhabitants. The land was poorly wooded, so the company had to bring timber and workers from
Cambrai Cambrai (, ; pcd, Kimbré; nl, Kamerijk), formerly Cambray and historically in English Camerick or Camericke, is a city in the Nord (French department), Nord Departments of France, department and in the Hauts-de-France Regions of France, regio ...
. On 17 February 1852 the drill hole reached coal at . Sinking of Mine 1 at Bully began on 26 March 1852, and the mine came into operation in 1853.. An imperial decree of 15 January 1853 granted the Compagnie de Béthune, created by act of 25 September 1851 and represented by Constant Quentin, Petit Courtin and Joseph Lobez, the concession for coal mines in the communes of Haisnes, Auchy, Violaines, Cuinchy, Beuvry, Sailly, Labourse, Sains, Bouvigny, Aix, Liévin, Loos, Hulluch, Cambrin, Annequin, Noyelles, Vermelles, Mazingarbe, Grenay and Bully in the arrondissement of Béthune, Pas-de-Calais. The concession was named the Grenay concession. The Grenay concession lay between the Noeux and Lens concessions. At first the company had great difficulty disposing of the products, which had to be transport by horse-drawn carts to
Arras Arras ( , ; pcd, Aro; historical nl, Atrecht ) is the prefecture of the Pas-de-Calais Departments of France, department, which forms part of the regions of France, region of Hauts-de-France; before the regions of France#Reform and mergers of ...
, where it could be transferred to barges or railway cars. An attempt to form a company to make coke near the canal at
Violaines Violaines () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography An ex-coalmining region, Violaines is situated some east of Béthune and southwest of Lille, at the junction of the D167 and D947 roa ...
in 1856 failed.


Expansion 1859–1914

The company decided to connect their mines by rail to the waterways and to the projected new railways. In December 1859 a decree allowed the company to build a railway from Bully to Violaines. Decrees of 29 August 1863 and 8 March 1865 authorized the Mines de Béthune to extend their railway network to
Béthune Béthune ( ; archaic and ''Bethwyn'' historically in English) is a city in northern France, sub-prefecture of the Pas-de-Calais department. Geography Béthune is located in the former province of Artois. It is situated south-east of Calais, ...
and
Lille Lille ( , ; nl, Rijsel ; pcd, Lile; vls, Rysel) is a city in the northern part of France, in French Flanders. On the river Deûle, near France's border with Belgium, it is the capital of the Hauts-de-France Regions of France, region, the Pref ...
. A limited company named the Compagnie du Chemin de fer de Lille à Béthune et à Bully-Grenay was formed on 11 May 1865 to operate the railway. Additional mines were sunk between 1859 and 1909 in
Vermelles Vermelles () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Vermelles is situated southeast of Béthune and southwest of Lille, at the junction of the D39, D75 and D943 roads and by the banks of ...
,
Loos-en-Gohelle Loos-en-Gohelle is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography A former coal mining town, three miles northwest of the centre of Lens, at the junction of the D943 and the A21 autoroute. Its ne ...
,
Mazingarbe Mazingarbe (; pcd, Mazingarpe) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. History The village was known as Masengarba in 1046, Masengarbe in 1232 and Mazengarbe in 1558. Mazingarbe's first inhabitan ...
,
Auchy-les-Mines Auchy-les-Mines () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Until 1926 it was named ''Auchy-lez-La-Bassée''. Geography A small ex- coal mining town, now mostly a light engineering and farming commu ...
,
Annequin Annequin () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Annequin is a large farming (and ex-mining) village situated some east of Béthune and southwest of Lille, at the junction of the D61 ...
,
Sains-en-Gohelle Sains-en-Gohelle is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Sains-en-Gohelle is an ex-coalmining town, nowadays a farming and light industrial commune, northwest of Lens, at the junction ...
and Grenay. Coal was typically reached at a depth of . The coal had increasingly volatile content ranging from 9.5% in the north to 34-38% in the south.
Charles Ignace Plichon Charles Ignace Plichon (28 June 1814 – 3 June 1888) was a French lawyer, businessman and politician. As a young man he was attracted to the social idealism of Saint-Simonianism. In 1841–42 he undertook a diplomatic and exploratory mission to th ...
(1814–88) was Deputy of Nord and Minister of Public Works in 1870. He was the son-in-law of Alexis Boitelle, an administrator of the Company, and became an administrator himself. He was president of the administrative council from 1873 to 1883, when he resigned, apparently due to a conflict with Bouitelle. The company faced many difficulties during his term of office, and had only moderate growth, since neither Plichon nor Boitelle had technical training. Louis Mercier (1856–1927) was made director-general of the Mines de Béthune in 1877 and became a member of the
Comité des forges The Comité des forges (Foundry Committee) was an organization of leaders of the French iron and steel industry from 1864 to 1940, when it was dissolved by the Vichy government. It typically took a protectionist attitude on trade issues, and was o ...
in 1878. With the appointment of Mercier, helped by an improvement in the economic situation, the mines became more prosperous. After a survey of the Aix-Noulette region, the original concession was increased to an area of by an act of 1877. An 1881 encyclopedia entry described the concession as covering 5,761 hectares in the Pas-de-Calais, with 6 or 7 mines. It produced 231,711 tons in 1870, 220,519 tons in 1871, 200,817 tons in 1872, 253,124 tons in 1873 and 279,526 tons in 1874. Coal production steadily increased, interrupted only by
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
(1914-18) and the 1932 economic crisis. Ignace Plichon's son
Jean Plichon Jean Plichon (14 June 1863 – 22 September 1936) was a French industrialist and politician. He trained as a mining engineer. When his father died in 1888 he inherited the presidency of the Bethune mining company and also replaced his father as de ...
(1863–1936) graduated as an engineer from the
École Centrale The Ecoles Centrales Group is an alliance, consisting of following grandes écoles of engineering: * CentraleSupélec (formed by merger of École Centrale Paris and Supélec) established in 2015 * École centrale de Lille established in 1854 * à ...
. Jean Plichon became a mining engineer at the Mines de Béthune in 1886. When his father died in 1888 he replaced his father in the General Council of Nord, and the next year was elected Deputy on a monarchist platform. He also succeeded his father as an administrator of the company. He became one of the leading industrialists of northern France, president of the Béthune, Blanzy and Sainte-Thérèse mining companies, and a member of a dozen or more boards of directors.


World War 1914–18

The German offensive in the summer of 1914 only invaded the eastern part of the Pas-de-Calais mining region. After the
first Battle of the Marne The First Battle of the Marne was a battle of the First World War fought from 5 to 12 September 1914. It was fought in a collection of skirmishes around the Marne River Valley. It resulted in an Entente victory against the German armies in the ...
from 6–10 September 1914, the "
Race to the Sea The Race to the Sea (; , ) took place from about 1914 during the First World War, after the Battle of the Frontiers () and the German advance into France. The invasion had been stopped at the First Battle of the Marne and was followed by the ...
" established a front line that cut through the mining basin. The Germans were stopped to the east of Vermelles. The concession was cut in two along a line from Auchy-les-Mines to
Liévin Liévin (; pcd, Lévin; ) is a commune in the Pas-de-Calais department in northern France. The inhabitants are called ''Liévinois''. Overview The town of Liévin is an old mining area of Pas-de-Calais. Near Lens, this town is of modest size but ...
, with Mines 4 and 8 occupied by the Germans. The men who had not yet been mobilized were evacuated on 4 October 1914 in the face of the German advance, and production was suspended until 22 October 1914. Mine 4 (Vermelles) was recovered in December 1914, but Mine 8 (Auchy) was not recovered until the German troops withdrew at the end of the war. The British liberated Loos in the
Battle of Loos The Battle of Loos took place from 1915 in France on the Western Front, during the First World War. It was the biggest British attack of 1915, the first time that the British used poison gas and the first mass engagement of New Army units. Th ...
of 25 September – 8 October 1915. This front was then relatively stable throughout the war. From October 1914 to the summer of 1918 the Mines de Béthune were continuously bombarded by German artillery, which destroyed much of its infrastructure. The surface installations of mines 4, 5 (Loos-en-Gohelle) and 7 (Mazingarbe) were totally destroyed. All the other mines were damaged by the artillery fire. The rotunda at Loos-en-Gohelle, a circular structure for storing locomotives, was destroyed on 20 May 1915. Occupation of 2/3 of the mining basin of the departments of Nord and Pas-de-Calais by the Germans was a disaster to the French, since the basin provided almost 75% of French coal production before the war. Average daily production fell from 8,000 tons in 1913 to 1,000 tons in 1916. Production fell from 2,423,000 tons in 1913 to 332,000 tons in 1915–16. The concession was cut by trenches that constantly changed as the front advanced and retreated. Only five extraction sites could be kept open, in the communes of Aix-Noulette, Bouvigny-Boyeffles, Bully-les-Mines, Grenay, Mazingarbe, Sains-en-Gohelle and Vermelles. These continued to supply raw coal to the war economy. Before the war the director Louis Mercier had diversified into manufacture of coke and a small tar distillery, but during the war only production of unprocessed raw coal continued. Operations were made very difficult by the bombardment. The presence of the front a few kilometers from La Bassée, Loos-en-Gohelle, Lens and Notre-Dame de Lorette put the Mines de Béthune in the front line. All types of infrastructure were destroyed including
headframe A headframe (also known as a gallows frame, winding tower, hoist frame,Ernst, Dr.-Ing. Richard (1989). ''Wörterbuch der Industriellen Technik'' (5th ed.). Wiesbaden: Oscar Brandstetter, 1989. pit frame, shafthead frame, headgear, headstock o ...
s, buildings, rotundas, power stations and railway lines, with work halted while they were repaired. In September 1917 the Béthune concession was a quadrilateral with an area of dominated by the summits of Haisnes, Grenay, Bouvigny and Beuvry. The east, west and north sides were mine galleries between shafts for extraction and ventilation. A long gallery led to Mine 8 in Auchy in the northeast. The Germans were concerned about infiltration of the allies via the mines, and therefore destroyed the mine shafts,
headframe A headframe (also known as a gallows frame, winding tower, hoist frame,Ernst, Dr.-Ing. Richard (1989). ''Wörterbuch der Industriellen Technik'' (5th ed.). Wiesbaden: Oscar Brandstetter, 1989. pit frame, shafthead frame, headgear, headstock o ...
s and
pump A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they u ...
s. Shaft 8 was blocked by the Germans between the level and the lower level. Below the blockage the French could freely work the coal seams, even under the German side. Pumps were brought back into service below the shafts to drain the sector. Barricades were built as early as 1916 along the main axes of the mine complex so it could be defended while allowing ventilation and the passage of men. Mines 3 and 4 in
Vermelles Vermelles () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Vermelles is situated southeast of Béthune and southwest of Lille, at the junction of the D39, D75 and D943 roads and by the banks of ...
were isolated from the rest of the mines by watertight doors. British soldiers of the 170th Tunneling Company established a listening system at the bottom of shaft 8bis which picked up sounds of activity in August 1917. In early September there was an underground struggle in which the Germans were forced out of the mine. Around midnight of 25–26 September 1917 the 38th German Pioneer Regiment poured about 8 tons of the suffocating gas
chloropicrin Chloropicrin, also known as PS and nitrochloroform, is a chemical compound currently used as a broad-spectrum antimicrobial, fungicide, herbicide, insecticide, and nematicide. It was used as a poison gas in World War I. Its chemical structural for ...
into Mine 8, and carried by the ventilation systems the gas took under four hours to travel the to Mine 9 and the shaft of Mine 12. The people around the base of Shaft 8 died, but those further away escaped via the ladders of Shaft 9. After the attack a thick masonry wall was built in the main haulage gallery to isolate the sectors near shafts 8 and 8bis. The Germans blew up the casing of Shaft 8 and the heads of Shafts 8 and 8bis. The mines were evacuated by order of the military on 12 April 1918, and production resumed only after the final retreat of the enemy forces.


Later history 1918–46

After the armistice of November 1918 the company began to modernise its facilities, gradually replacing steam power by electricity, and developing new methods of extracting coal from the seams. The 11 mines did not achieve full production until 1924. A monument to the personnel of the mines de Béthune who had died in the war, with bas-reliefs by the sculptor Paul Capelacre, was inaugurated in October 1924. It held the names of 955 dead, 847 who had been killed as soldiers and 108 while working under fire. In 1924 Jean Plichon, Deputy for Nord, was still president of the company and Louis Mercier was still director-general. For industries like metallurgy and coal mining, only a limited company can manage the huge amounts of capital investment required. However, the Bethune mines had become a fief of the Plichons, since Jean was succeeded by his brother Pierre and nephew Jean-Pierre Plichon. Men such as the Plichons, although they did not belong to the rich industrial bourgeoisie, were able to build great fortunes due to their political and technical skills. Ignace's younger son Pierre Plichon took to the law and became a member of the Paris Court of Appeal, then resigned and joined the board of the Bethune company. Pierre's son, Jean-Pierre Plichon (1907–66), was an engineer of arts and manufactures. He became a liberal deputy for the Lille region. Production of coke resumed after the war, although it was halted during the
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
that began in 1932. Peak output was 565,195 tons in 1928. Secondary shafts continued to be opened until 1925. The company became one of the most powerful mining operations in the area. In 1945 the concession was a quadrilateral across with parts of 15 communes: Bully, Grenay, Loos, Vermelle, Mazingarbe, Noyelles, Sains en Gohelle, Auchy-les-Mines, Haisnes, Annequin, Cuinchy, Beuvry, Sailly, Lievin and Aix-Noulette.


Nationalization and closures 1946–82

The company was nationalized in 1946 and became part of the Groupe de Béthune, which included the former mining companies of Noeux, Vendin-les-Béthune, Gouy-Servin-Fresnicourt and Béthune. The Groupe de Béthune was merged with the Groupe de Lens in 1967. In 1957 Mine 10 was concentrated on Mine 13 of the Bethune group. In 1959 Mine 2 was concentrated on Mine 1, and in 1961 Mine 1 was in turn concentrated on Mine 13 of the Bethune Group. Mine 6 was concentrated on Mine 13 of the Béthune Group in 1961, providing access and ventilation. Mine 8 was concentrated on Mine 18 of the Lens group in 1961. Mines were closed and back-filled between 1962 and 1977. The
headframe A headframe (also known as a gallows frame, winding tower, hoist frame,Ernst, Dr.-Ing. Richard (1989). ''Wörterbuch der Industriellen Technik'' (5th ed.). Wiesbaden: Oscar Brandstetter, 1989. pit frame, shafthead frame, headgear, headstock o ...
s of Mine 5 were demolished in 1969 and 1970, leaving only the entrance gate. Demolitions continued between 1971 and 1982. The headframe of Shaft 1ter, which had unique architecture, was destroyed in 1973. Mine 3, the last remaining mine, was back-filled in 1977.


Facilities

Factories were created at Mazingarbe in 1895 to process the coal. Some were used to screen and wash the raw coal. By 1945 the facility could wash 400 tons of raw coal per hour. The coking plant had four batteries of ovens to process washed coal, and produced 100,000 tons per year from 1899 to 1906, 200,000 tons in 1912 and 392,700 tons in 1913. Additional workshop manufactured products such as
ammonia Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous was ...
,
sodium nitrate Sodium nitrate is the chemical compound with the formula . This alkali metal nitrate salt is also known as Chile saltpeter (large deposits of which were historically mined in Chile) to distinguish it from ordinary saltpeter, potassium nitrate. T ...
,
methanol Methanol (also called methyl alcohol and wood spirit, amongst other names) is an organic chemical and the simplest aliphatic alcohol, with the formula C H3 O H (a methyl group linked to a hydroxyl group, often abbreviated as MeOH). It is a ...
,
formaldehyde Formaldehyde ( , ) (systematic name methanal) is a naturally occurring organic compound with the formula and structure . The pure compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde (refer to section F ...
and
ether In organic chemistry, ethers are a class of compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups. They have the general formula , where R and R′ represent the alkyl or aryl groups. Ethers can again be c ...
. All the concession services required large amounts of electricity. A thermal power station was built at Bully in 1905, and a second at Mazingarbe in 1931. Surplus power was delivered to the Société électrique du Nord Ouest. A railway system with of track connected all the facilities, crossed from north to south by a main line that connected the northern network to Bully-Grenay and Violaines. By 1945 there were 1,300 cars and 27 locomotives. At Violaines the company had a basin to load barges, connected to the
Canal d'Aire The Canal d'Aire is a French canal connecting the Canal de Neufossé in Aire-sur-la-Lys to the Canal de la Deûle in Bauvin. It is a segment of the Canal Dunkerque-Escaut. See also * List of canals in France References External links Pr ...
at
la Bassée La Bassée () is a commune in the Nord department in northern France. Population Heraldry Personalities La Bassée was the birthplace of the painter and draftsman Louis-Léopold Boilly (1761–1845). Another native was Ignace François ...
. At first, Bully had just 400 inhabitants. By 1875 there were 2,161 employees and 867 houses. By 1945 there were 12,640 employees and 7,790 dwellings. The towns had schools, churches, sports fields and stadiums. There were many social projects to help people in difficulty, and the company had a medical and hygiene organization with a dispensary, clinic, infant centers and medical staff. The Étoile Sportive de Bully was founded in 1920 by the Company with a sports complex considered the most modern in France. There were five football pitches, one with stands for several hundred spectators, dressing rooms with showers, individual lockers for players. Members could also practice gymnastics, boxing and athletics. Mining towns were built near the mine in a distinctive architectural style. Cité n°5 (Town 5) was built on a rectangular grid pattern between 1900 and 1925 to the south of
spoil tip A spoil tip (also called a boney pile, culm bank, gob pile, waste tip or bing) is a pile built of accumulated ''spoil'' – waste material removed during mining. These waste materials are typically composed of shale, as well as smaller quant ...
58a for the workers in No. 5 mine. Houses built before 1914 are semi-detached, with a simple architectural style, central dormer windows and very discreet brick patterns on the façade. The houses built after the war have more complex roof lines and porches. The 1925 Eglise Saint-Louis was built following plans by the architect Gustave Umbdenstock. It is a red brick Romanesque church with
Art Deco Art Deco, short for the French ''Arts Décoratifs'', and sometimes just called Deco, is a style of visual arts, architecture, and product design, that first appeared in France in the 1910s (just before World War I), and flourished in the Unite ...
elements. There is a school with two long red brick buildings, one for girls and one for boys. The Cité des quarante to the west was built for workers in Mine 6 between 1913 and 1927, with a mix of straight and curved streets. It consists entirely of pairs of semi-detached houses surrounded by gardens. The broken roof lines and porches are typical of the company.


Mines


Bully-les-Mines

Excavation of Mine 1 started in March 1852 at Bully-les-Mines with a mine shaft diameter of , reaching coal at . Production started in 1853, when 7,000 tons of coal were extracted. This rose to 21,000 tons the next year. In 1865 a more modern engine was installed with two horizontal cylinders. In November 1869 eighteen workers were asphyxiated by fumes from a fire. Mine 1 was completely renovated in 1876, with a new engine installed. By 1880 Mine 1 had produced a total of 1,280,000 tons of coal, and had reached a depth of . Shaft 1bis was added in 1889 and Shaft 1ter in 1911. Excavation of Mine 2, with a diameter of , was started on 20 November 1855 at Bully-les-Mines, and reached coal at . The shaft passed through an underground aquifer, for which a pumping machine was needed. Extraction started in February 1859 in a very rugged deposit. In 1868 the Davaine ventilator in Mine 2 was no longer adequate and had to be replaced. By 1880 Mine 2 had produced 720,000 tons in total and was deep.


Vermelles

Excavation of Mine 3 in Vermelles began in January 1857, reaching a rugged, steeply inclined deposit of coal at . Extraction started in July 1860. Air compressors were installed in Mine 3 1877. This proved the most productive mine, with a total of 1,525,000 tons. Excavation of Mine 4 at Vermelles started in October 1865 and reached coal at . Extraction started in 1867. Mine 4 was abandoned in 1876 because the very irregular deposit at seemed unusable. There was a lot of
firedamp Firedamp is any flammable gas found in coal mines, typically coalbed methane. It is particularly found in areas where the coal is bituminous. The gas accumulates in pockets in the coal and adjacent strata and when they are penetrated the releas ...
compared to other mines. Mine 4 was reopened and extraction resumed at in 1911. The main shaft reached . Shaft 4bis was opened to the north in 1925 for ventilation, deep.


Loos-en-Gohelle

Excavation of the Mine 5 in Loos-en-Gohelle started in April 1873, reaching a slightly inclined bed of coal at . A vein of coal thick was found at and veins of at . Extraction started in May 1875. Compressed air machines were used to drilling and mechanical traction. Mine 5 was very productive, with 335,000 tons already extracted by 1880. Shaft 5bis was added in 1901. Shaft 5 and 5bis reached depths of . Mine 5 eventually produced 24,7411,000 tons of coal.


Mazingarbe

Excavation of Mine 6 at Mazingarbe began in October 1874 and reached an irregular bed of coal at . Extraction began in 1876 using a extraction machine. Mine 6 was connected to Mine 1 in 1877. Shaft 6bis was opened in August 1885. Mine 7 was started in April 1875 at Mazingarbe, and reached coal at . Extraction started in May 1877 using the old extraction machine from Mine 1. Shaft 7bis was added in 1905.


Other locations

Work on Mine 8 at Auchy-les-Mines began in July 1891, and the mine was opened in November 1893. Shaft 8bis was started in November 1893. Excavation of Mine 9 began in 1893 at Annequin. Mine 9 began production in 1896, ventilated by shafts 4bis and 12. Excavation of Mine 10 started in July 1900 at Sains-en-Gohelle, and eventually reached . Shaft 10bis was started in July 1901 and reached . Production started in 1903. Excavation of Mine 11 at Grenay began in October 1904. Excavation of Shaft 11bis, for ventilation, began in May 1906. Extraction started in April 1908. Shaft 12 was started at Annequin in February 1909 and reached a depth of . It was connected to Mine 9 and was used only for ventilation. The main mines, to which secondary ventilation or extraction shafts were often added, were:


Notes


Sources

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Further reading

* {{DEFAULTSORT:Compagnie des mines de Bethune Tarn (department) Coal companies of France French companies established in 1851 Energy companies established in 1851