Only the un-reclaimed, naturalising spoil heap of the Londonderry family's Broomside Colliery remains at the site of the pit sunk in 1829 in Pittington Parish, and which closed around 1890. It stood alongside tracks, which by 1839 had become part of the Sunderland and Durham Railway. Only four miners' houses stood on the site; the rest of its workers were housed half a mile distant at the purpose-built village of Broomside, located at first in St. Giles Parish, then in Belmont Parish after its formation in 1852. The route along which the miners walked to work survives today as a right of way. The colliery features in T.H.Hair's 'Sketches From Coal Mines' of 1840.

NEHL - The colliery featured a small row of terraces, though never enough to fill the vacancies at the working. Therefore, its likely pitmen utilised the trail still in situ at Broomside Farm (now golf club) from the village itself, where terraces had sprouted up before the mid 19th century.

Sidings were situated on the north end of the complex, connecting to the line towards Pittington for onwards shipment to Seaham or Sunderland. There was also 2 pit ponds and 2 spoil heaps on either side of the railway.

Upon visiting in mid 2023, the remains are clear to see. The spoil heap is substantial even today, and the shaft is still in situ entombed in a fence indicating its danger. There is also a contemporary stone bridge to the south west which leads to that same footpath mentioned.