Which device is used to move loose material without digging?

• A. Rehandling clamshell
• B. Self-dumping bin
• C. Piling hammer
• D. Gantry crane

Answer: (A)

The key idea is using a device that can scoop up loose material from a pile without digging into the ground. A rehandling clamshell is a bucket with two hinged shells that open wide to grab bulk material like sand, gravel, coal, or ore from a stockpile, then close and lift it to move the material to another location. This setup lets you relocate bulk material efficiently without excavating or digging into the earth, which is exactly what the question describes.

The other options don’t fit this purpose as neatly. A self-dumping bin is a container that’s loaded and then tipped to unload; it doesn’t actively scoop material from a pile. A piling hammer is used to drive piles into the soil, not to move loose material. A gantry crane is a large crane used to lift and move loads, but it isn’t specialized for grabbing bulk material from a stockpile without digging in.