Which one of the following shovel excavators is considered most effici

1.	Which one of the following shovel excavators is considered most efficient in loading carriers ?
A.	Dipper shovel
B.	Dragline
C.	Backhoe
D.	Clamshell
Answer» D. Clamshell

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Which one of the following shovel excavators is considered most efficient in loading carriers ?

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