Stripper shovel
A stripper shovel is only a modification of dipper shovel with a long boom and is used for casting fragmented rock or earth into a dump of overburden. It is mostly deployed for overburden.
Fig. 5.10. -Quarry working with stripper and dipper shovels.
Pull shovel or hoe
Fig. 5 .9 show a pull shovel, which is also known as a hoe, back hoe, drag shovel, or ditching shovel. It is used for loading dumpers and its best application is for digging below the level on which it stands. The shovel and the dumpers can stand al a higher level free from water and mud of the quarry floor. As the attachments to the bucket are by dipper stick and not by cables, the bucket is under positive control of the operator and therefore suitable for hard digging.
The shovel is used for stripping top soil, and making shallow cuts and trenches upto a depth of 3.5 to 6 m. Compared to dipper shovel, the hoe is slower in digging and less efficient for loading trucks.
In deep digging, the face should be kept fairly straight and the shovel should be as far back from the edge as possible, otherwise there may be danger of caving of the edge.
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