179th Tunnelling Company

The 179th Tunnelling Company was one of the specialist tunnelling units created by the British Army during the First World War and placed within the Royal Engineers. Its work was not commercial brand activity but military engineering conducted underground beneath the opposing trench systems. The company undertook offensive and defensive mining, counter-mining, and the construction of underground infrastructure, including deep dugouts, subways, saps, cable trenches, signal facilities and medical chambers. The unit emerged from the British response to the extensive underground warfare that developed on the Western Front in late 1914 and early 1915. German mining beneath British and Allied positions demonstrated that conventional infantry defenses were insufficient. The War Office formally approved a tunnelling-company scheme on 19 February 1915 after discussions involving Brigadier George Fowke and mining specialist John Norton-Griffiths. Experienced coal miners were recruited because their practical knowledge was essential for working quickly and quietly in difficult geological conditions. The companies generally combined Royal Engineers officers and sappers with infantry personnel attached when required. The 179th Tunnelling Company was formed in 1915 and was assigned to the Somme area, particularly the sector around Thiepval and La Boisselle. The ground there consisted largely of hard chalk and had already been extensively mined by French and German forces. At L’îlot de La Boisselle, a heavily contested position later known to British troops as the Glory Hole, the company worked through a dangerous network of shafts and galleries. In November 1915, its personnel attempted to intercept German miners approaching beneath the British lines. A German underground explosion collapsed portions of the British workings and caused casualties; some bodies remained buried beneath La Boisselle. The company later participated in preparations for the opening of the Battle of the Somme. Its responsibilities included digging shallow Russian saps toward no-man’s-land and helping prepare mines beneath German positions. The best-known operation associated with the unit was the Lochnagar mine at La Boisselle. The 185th Tunnelling Company began the work in November 1915 and transferred responsibility to the 179th in March 1916. The mine comprised two chambers connected through a long access gallery and was loaded with a large quantity of ammonal. On 1 July 1916, the first day of the Somme offensive, Captain James Young of the 179th Tunnelling Company initiated the firing of the Lochnagar mine. Its detonation created a large crater and formed part of a coordinated series of mines intended to disrupt German defenses and support the infantry assault. The 179th Tunnelling Company is therefore chiefly remembered for the specialized engineering dimension of the Somme campaign. Its historical significance lies in the hazardous technical labor of underground warfare: detecting enemy excavation, constructing and maintaining deep galleries, placing explosives, and creating covered routes for attacking troops. As a wartime military unit, it did not operate as an independent modern organization or consumer-facing brand, and its active service ended with the First World War.

The British tunnelling companies were created after underground warfare became a major feature of the Western Front. By early 1915, German mining beneath Allied trenches had exposed the British lack of suitable counter-mining methods and underground listening equipment. The War Office approved a formal tunnelling-company scheme on 19 February 1915 following work by Brigadier George Fowke and mining specialist John Norton-Griffiths. Experienced miners, including men recruited outside normal military occupations, were brought into the Royal Engineers to provide the necessary technical skills. The 179th Tunnelling Company was formed in 1915 and served in the Somme area. It operated around Thiepval and La Boisselle, where French and German troops had already created extensive underground systems. The chalk soil was harder to excavate than the softer ground encountered in parts of Flanders, and the narrow no-man’s-land around L’îlot de La Boisselle made underground work particularly dangerous. In October 1915, the company sank shafts and constructed counter-mine galleries from the British position. In November, its commander, Captain Henry Hance, judged that German miners were dangerously close and ordered a British chamber loaded with explosives. A German underground blast on 22 November collapsed parts of the British system and filled the workings with carbon monoxide; the British charge was also detonated in the incident. The company’s most prominent work came during preparations for the Battle of the Somme. Royal Engineers planned nineteen mines and a series of shallow Russian saps along the British sector. The saps were intended to extend from the front line into no-man’s-land and allow assault troops to begin their advance from a position closer to the German defenses. The 179th Tunnelling Company worked on saps near Thiepval, Ovillers and La Boisselle, including ten saps in the area allocated to the 36th (Ulster) Division. At La Boisselle, the company was involved with four major mines. Two charges beneath L’îlot were driven from Inch Street Trench, while the Y Sap and Lochnagar mines were intended to support attacks on either side of the German salient. The 185th Tunnelling Company began the Lochnagar project on 11 November 1915 and handed it over to the 179th in March 1916. The mine used a deep inclined shaft and a long, narrow access tunnel leading to two explosive chambers. The tunnellers worked under strict conditions intended to reduce noise, removing chalk carefully and passing spoil hand-to-hand. German mining remained close enough to create a constant threat of interception. On 1 July 1916, the opening day of the Somme offensive, the La Boisselle mines were fired at 7:28 a.m. Captain James Young of the 179th Tunnelling Company operated the switches that initiated the Lochnagar explosion. The two charges produced a single large crater and were intended to destroy German underground works, obstruct defensive fire and assist the advancing infantry. The event became the company’s defining historical association. The company’s record illustrates the importance of specialist engineering in industrialized warfare. Its personnel worked in confined, unstable and frequently contaminated galleries, where a few yards of excavation could determine whether a mine succeeded or an enemy charge destroyed the system. The surviving account of the company is consequently centered on military operations rather than organizational expansion, commercial activity or later corporate continuity.

• 1916

  Lochnagar mine transferred to the company

  [1]179th Tunnelling Companyen.wikipedia.org

  The 179th Tunnelling Company assumed responsibility for the Lochnagar mine project from the 185th Tunnelling Company in March.

• 1916

  Lochnagar mine fired

  [1]179th Tunnelling Companyen.wikipedia.org

  Captain James Young initiated the Lochnagar mine at the start of the Battle of the Somme on 1 July.

• 1915

  Company formed

  [1]179th Tunnelling Companyen.wikipedia.org

  The 179th Tunnelling Company was established as part of the Royal Engineers’ expansion of specialist underground units during the First World War.

• 1915

  Deployment to the Somme sector

  [1]179th Tunnelling Companyen.wikipedia.org

  The company moved into the Thiepval–La Boisselle area, where British, French and German forces were engaged in intensive underground mining.

• 1915

  Counter-mining crisis at La Boisselle

  [1]179th Tunnelling Companyen.wikipedia.org

  A German underground explosion collapsed British galleries and caused casualties during the company’s counter-mining work.

A specialist Royal Engineers tunnelling unit focused on underground warfare, military mining and subterranean field engineering.

• Military mine · 1916

  Lochnagar mine

  A large underground explosive system beneath the German position near La Boisselle. Begun by the 185th Tunnelling Company and completed under the 179th, it used a deep access shaft, a long gallery and two explosive chambers. The mine was fired on 1 July 1916 to support the opening assault of the Somme offensive.

• Military communication and assault tunnels · 1916

  Russian saps

  Shallow tunnels driven from British front-line positions into no-man’s-land. The 179th Tunnelling Company constructed saps near Thiepval, Ovillers and La Boisselle so infantry could approach German positions from a shorter distance at zero hour.

• 1916Battle of the Somme

  Somme front

  The 179th Tunnelling Company prepared mines and Russian saps for the opening of the British offensive and fired the Lochnagar mine at La Boisselle.

  Outcome. The Lochnagar explosion created a prominent crater and formed part of the mine barrage supporting the first-day assault.

  Source
• 1915Somme underground warfare

  Somme sector · Western Front

  The company fought an underground engineering campaign around La Boisselle, sinking shafts, extending galleries and attempting to detect or destroy German mining operations.

  Outcome. The work helped establish the underground infrastructure used in the later Somme offensive, although the tunnelling involved major casualties and repeated risks from enemy mines.

  Source

• 1916

  Fire the Lochnagar mineOther

  Background

  The mine was intended to disrupt German defenses and support the infantry assault at the beginning of the Somme offensive.

  Action taken

  Captain James Young initiated the two charges at 7:28 a.m. on 1 July 1916.

  Aftermath

  The blast created a large crater and became the company’s most recognized operation.

  Source

• 1915

  Adopt deep counter-mining at La BoisselleStrategy

  Background

  German miners were approaching British positions beneath the La Boisselle sector, where the opposing underground systems were already extensive.

  Action taken

  The company sank deep shafts and drove counter-mine galleries toward the suspected German workings.

  Aftermath

  The operation encountered a German blast that collapsed galleries and demonstrated the extreme hazards of underground combat.

  Source

• 1916

  Lochnagar mine fired at the opening of the Somme offensive[1]179th Tunnelling Companyen.wikipedia.org

  Other · Product launch

  Captain James Young of the 179th Tunnelling Company initiated the detonation of the Lochnagar mine at 7:28 a.m. on 1 July 1916.

• 1915

  The 179th Tunnelling Company conducts underground operations at La Boisselle[1]179th Tunnelling Companyen.wikipedia.org

  Other

  The company sank deep shafts and drove counter-mine galleries beneath the La Boisselle sector while attempting to prevent German miners from reaching British positions.

1. 1179th Tunnelling Companyen.wikipedia.org