Mines in the Battle of Messines (1917)
List of the mines
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Mines in the Battle of Messines (1917)

Section Title: List of the mines
Table Section Text: |}

No.	Name / Location	Position	Explosive charge	Tunnel length	Depth	Constructed	Result	Notes and images (May be under first row of each group of mines)

1	Hill 60 (or Hill 60 A)	50°49′26″N 2°55′44″E / 50.82389°N 2.92889°E	24,300 kg (53,500 lb)	354 m	30 m	22 August 1915 – 1 August 1916	Fired	Shared gallery with Caterpillar, started in mid-1915 as one of the first allied mines at Ypres and known as Berlin Tunnel.

2	Caterpillar (or Hill 60 B)	50°49′20″N 2°55′43″E / 50.82222°N 2.92861°E	32,000 kg (70,000 lb)	427 m	33 m	22 August 1915 – 18 October 1916	Fired	Views: aerial view, photo

3	St Eloi	50°48′32″N 2°53′31″E / 50.80889°N 2.89194°E	43,400 kg (95,600 lb)	408 m	42 m	16 August 1915 – 11 June 1916	Fired	Largest detonation during the Battle of Messines. The deep mine crater is located next to double crater from 1916.

4	Hollandscheschur Farm 1	50°47′50″N 2°52′10″E / 50.79722°N 2.86944°E	15,500 kg (34,200 lb)	251 m	20 m	18 December 1915 – 20 June 1916	Fired	The mine consisted of three chambers (Hollandscheschur Farm 1–3) with a shared gallery. It was placed around the German strongpoint Günther between Wijtschate and Voormezele, not far from the Bayernwald trenches in Croonaert Wood.

5	Hollandscheschur Farm 2	50°47′49″N 2°52′04″E / 50.79694°N 2.86778°E	6,800 kg (14,900 lb)	137 m	18 m	18 December 1915 – 11 July 1916	Fired

6	Hollandscheschur Farm 3	50°47′53″N 2°52′05″E / 50.79806°N 2.86806°E	7,900 kg (17,500 lb)	244 m	18 m	18 December 1915 – 20 August 1916	Fired

7	Petit Bois 1	50°47′18″N 2°51′56″E / 50.78833°N 2.86556°E	14,000 kg (30,000 lb)	616 m	19 m	16 December 1915 – 30 July 1916	Fired	The mine consisted of two chambers (Petit Bois 1 and 2) with a shared gallery. It was placed west of Wijtschate.

8	Petit Bois 2	50°47′22″N 2°51′56″E / 50.78944°N 2.86556°E	14,000 kg (30,000 lb)	631 m	23 m	16 December 1915 – 15 August 1916	Fired

9	Maedelstede Farm	50°46′59″N 2°51′57″E / 50.78306°N 2.86583°E	43,000 kg (94,000 lb)	518 m	33 m	3 September 1916 – 2 June 1917	Fired	Two chambers (Wytschaete Wood and Maedelstede Farm) were planned, but lack of time prevented the former from being finished and all effort was concentrated the latter.

10	Peckham 1	50°46′47″N 2°51′50″E / 50.77972°N 2.86389°E	39,000 kg (87,000 lb)	349 m	23 m	20 December 1915 – 19 June 1916	Fired	The mine consisted of two chambers (Peckham 1 and 2) with a shared gallery. Peckham 1 was detonated during the battle.

11	Peckham 2	50°46′52″N 2°51′56″E / 50.78111°N 2.86556°E	9,100 kg (20,000 lb)	122 m	23 m	20 December 1915 – December 1916	Abandoned

12	Spanbroekmolen (or Lone Tree Crater, Pool of Peace)	50°46′33″N 2°51′42″E / 50.77583°N 2.86167°E	41,000 kg (91,000 lb)	521 m	29 m	1 January 1916 – 26 June 1916	Fired	Discovered by German troops in February 1917, later reclaimed and fired in the Battle of Messines. The crater was acquired in 1929 by the Toc H foundation in Poperinge, today recognised as peace memorial.

13	Kruisstraat 1	50°46′16″N 2°51′54″E / 50.77111°N 2.86500°E	14,000 kg (30,000 lb)	492 m	19 m	2 January 1916 – 5 July 1916	Fired	Building preparations for a two-chamber mine started in December 1915. Kruisstraat 1 was placed at the end of a 492 metres (538 yd) long gallery, Kruisstraat 2 some 50 metres (55 yd) to its right.

14	Kruisstraat 2	50°46′14″N 2°51′52″E / 50.77056°N 2.86444°E	14,000 kg (30,000 lb)	451 m	21 m	2 January 1916 – 23 August 1916	Fired

15	Kruisstraat 3	50°46′21″N 2°52′2″E / 50.77250°N 2.86722°E	14,000 kg (30,000 lb)	658 m	17 m	2 January 1916 – 23 August 1916	Fired	Kruisstraat 3 had the longest gallery of the mines at Messines.

16	Kruisstraat 4	50°46′16″N 2°51′54″E / 50.77111°N 2.86500°E	8,800 kg (19,500 lb)	492 m	19 m	February 1917 – 9 May 1917	Fired

17	Ontario Farm	50°45′50.4″N 2°52′36.9″E / 50.764000°N 2.876917°E	27,000 kg (60,000 lb)	392 m	34 m	28 January 1917 – 6 June 1917	Fired	The mine did not produce a crater but left a shallow indentation in the soft clay; the shock wave did great damage to the German position.

18	La Petite Douve Farm	50°45′11″N 2°51′55″E / 50.75306°N 2.86528°E	23,000 kg (50,000 lb)	518 m	23 m	28 January 1916 – n/a	Abandoned	The mine was placed under the barn of the farm La Basse Cour. It was discovered by the Germans on 24 August 1916, then flooded and abandoned.

19	Trench 127 Left (or Trench 127 North)	50°44′55″N 2°54′14″E / 50.74861°N 2.90389°E	16,000 kg (36,000 lb)	302 m	25 m	28 December 1915 – 20 April 1916	Fired	The mine consisted of two chambers (Trench 127 Left and Right) with a shared gallery. It was placed east of St.

20	Trench 127 Right (or Trench 127 South, Ash Crater)	50°44′51″N 2°54′17″E / 50.74750°N 2.90472°E	23,000 kg (50,000 lb)	405 m	26 m	28 December 1915 – 9 May 1916	Fired

21	Trench 122 Left (or Factory Farm 1, Ultimo Crater)	50°44′36″N 2°54′45″E / 50.74333°N 2.91250°E	9,100 kg (20,000 lb)	296 m	20 m	February 1916 – 14 April 1916	Fired	The mine consisted of two chambers (Trench 122 Left and Right) with a shared gallery. It was placed east of St.

22	Trench 122 Right (or Factory Farm 2, Factory Farm Crater)	50°44′30″N 2°54′47″E / 50.74167°N 2.91306°E	18,000 kg (40,000 lb)	241 m	25 m	February 1916 – 11 June 1916	Fired	Views: photo 1, photo 2

23	Birdcage 1 (or Trench 121)	50°44′21″N 2°54′27″E / 50.73917°N 2.90750°E	9,100 kg (20,000 lb)	130 m	18 m	December 1915 – 7 March 1916	Not fired	The mine was placed east of Ploegsteert, around the German strongpoint Birdcage at Le Pelerin, near the southern end of Messines Ridge.

24	Birdcage 2 (or Trench 121)	50°44′20″N 2°54′28″E / 50.73889°N 2.90778°E	15,000 kg (32,000 lb)	236 m	18 m	December 1915 – n/a	Not fired

25	Birdcage 3 (or Trench 121)	50°44′20″N 2°54′31″E / 50.73889°N 2.90861°E	12,000 kg (26,000 lb)	261 m	20 m	December 1915 – 30 April 1916	Exploded in 1955	Detonated by lightning on 17 June 1955, after an electric-power pylon had been built over the site.

26	Birdcage 4 (or Trench 121)	50°44′20″N 2°54′30″E / 50.73889°N 2.90833°E	15,000 kg (34,000 lb)	239 m	18 m	December 1915 – n/a	Not fired

Sentence(s)

Two mines were laid at Hill 60, one at St Eloi, three at Hollandscheschur Farm, two at Petit Bois, single mines at Maedelstede Farm, Peckham House and Spanbroekmolen, four at Kruisstraat, one at Ontario Farm and two each at Trenches 127 and 122.

final_sentence: Two mines were laid at Hill 60, one at St Eloi, three at Hollandscheschur Farm, two at Petit Bois, single mines at Maedelstede Farm, Peckham House and Spanbroekmolen, four at Kruisstraat, one at Ontario Farm and two each at Trenches 127 and 122.