The Bog East Shaft was sunk at the eastern end of the Westminster Vein c1860. Stoddard's Silicon Quarries own the land and still pump the water for quarry use. The shaft, engine house foundations and chimney remain at SJ21305680. The shaft to the north-west is capped , but now has a portal for Quarry use. A second shaft is shown on the 1st edition OS map, but this remains only as a large spoil mound. To the south of the Bog East Engine House, a line of three shafts run north to south at SJ21305680.