What is one benefit of using a power shovel for excavation?

Using a power shovel for excavation significantly reduces the amount of manual labor required on a job site. This mechanization allows for more efficient digging and handling of large volumes of material, which can lead to quicker project completion times. Power shovels are designed to perform heavy lifting and rapid excavation operations that would otherwise require several workers using hand tools, making the operation safer and faster.

Additionally, while the other choices highlight various aspects such as depth capability, noise levels, and accuracy, the distinct advantage here is the reduction in manpower, which directly impacts productivity and labor cost on excavation projects. The advanced machinery takes on much of the physical workload, allowing for a streamlined workflow and more effective use of human resources in other areas of the project.