


Slider wedge

Miner's iron wedge

Large wooden wedge for manoeuvring stone blocks

Patent wedge for coal, mkd. IV-22 D.S.&.A.

Four wooden wedges, used by Joseph Bramah in his workshop

Coal splitting wedge.

Mason's wedge (iron)
1874

Curved rectangular wedge

Patent wedge for coal, mkd. IV-99

Coal splitting wedge.

Ancient wedge (bergeisen) found in Cwmsymlog mine

Coal splitting wedge.

Coal wedge.
circa 1750s
Coal splitting wedge.
Coal splitting wedge.
Tramway wedges
coal mining wedge
Coal wedge
circa 1740