The Hendre Figallt workings were a lead and silver mine with multiple shafts, including the ‘engine shaft,’ Bromley’s shaft, and No. 1 shaft, as well as an adit level running north from the Alyn valley. These features were depicted in plans from 1879 and on the 1873 Ordnance Survey map. The shafts and associated structures, such as the engine buildings, are no longer visible due to quarrying activities that have affected the area. The site is historically significant as it represents one of the many mining operations in the Halkyn area, but much of its original infrastructure has been lost.

The Coed Hendre Vein, located to the north of the Hendre Valley, was mined by the North Hendre Company, whose workings extended south of Bryngwiog Mine. Today, the evidence of these workings has been largely erased by quarrying, including features such as Hendre Figallt and several shafts, including Bromleys’ shaft, which remains southeast of Cilcen Hall.

Hendre East was active between 1869 and 1877, but no detailed returns or National Grid References (NGR) are provided in Burt et al. (1993). Similarly, the Hendre South Mining Company operated from 1869 to 1871, with no detailed records or NGR, though it is likely that their workings were located in the southern part of the valley, at SJ18806760.

Hendre Figallt (also referred to as Villt) is shown on the Ordnance Survey 1st edition map from 1869-70, Sheet 1X.14, as a single shaft, generally working the same sett as North Hendre. Hendre Ucha, which operated in the Rhydymwyn area from 1861 to 1866, also lacks an NGR.

The Coed Hendre Vein runs to the north of the Hendre Valley, with the later large North Hendre Company working the sett to the south of Bryngwiog Mine. Much of the working evidence in this area has been lost to the current quarry operations.

The shafts near Cilcen Hall and Fron Farm were part of the later North Hendre Mine sett, as was Hendre Figallt, which has now been lost to quarrying. Bromleys’ shaft remains southeast of Cilcen Hall, but the old engine shaft and No. 2 shaft have been lost to quarrying.

The lead and silver mine, which dates from the early 19th century to 1913, included a group of associated features located to the north and west of the former Hendre Figallt farmstead. The mine workings were depicted on a 1879 plan, later reproduced by the British Geological Survey (Strahan 1890). The adit level ran north from the Alyn valley, and three shafts are shown on the plan: the ‘engine shaft’ and buildings (presumably for a winding engine) at SJ 19289 68191; ‘Bromley’s shaft’ at SJ 19221 67900; and ‘No. 1 shaft’ at SJ 19270 67900. A shaft depicted on the 1873 OS map at SJ 19128 68317 did not appear on Strahan’s plan, but it was presumably dug to test the continuation of the North Hendre Lode beyond an area of difficult ground.