Dragline excavator
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A dragline excavator is a heavy-duty excavator used in civil engineering and surface mining. It was invented in 1904, and presented an immediate challenge to the steam shovel (and its diesel and electric powered descendant, the power shovel. Much more efficient than even the largest of the latter, it enjoyed a heyday in extreme size for most of the 20th century, first becoming challenged by more efficient rotary excavators in the 1950s, then superseded by them on the upper end from the 1970s on.
Built by Bucyrus-Erie in 1969, Big Muskie was the world's largest ever dragline, being 487 ft (148 m) in length, weighing some 13,500 short tons (12,247 t), and hoisting a 220 cu yd (168.2 m3) bucket that could move 325 short tons (295 t) of material at a pass.
Dragline excavating coal in Australia
The walking mechanism on a preserved Bucyrus-Erie 1150 dragline in the UK
Wellingborough Tramway
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The Wellingborough Tramway was an industrial narrow-gauge railway that connected a series of ironstone mines and quarries with the Midland Railway and later with the ironworks on the north side of Wellingborough. In various forms, the tramway operated between 1875 and 1966.
Locomotive No. 86 that ran on the Tramway until 1966, seen preserved at the Irchester Narrow Gauge Railway Museum
The quarry face of Glebe Quarry, seen in 2006