What are the three configurations in which digger derrick turrets are mounted?

The correct option highlights the specific configurations in which digger derrick turrets are mounted. In particular, the rear center, front center, and corner mount configurations accommodate different operational needs and provide flexibility in how the equipment can be used on various job sites.

The rear center mount allows for stability and balance when lifting and positioning heavy loads. This configuration is often used when the machine operates in tight spaces, providing a strong point of leverage. The front center mount configuration offers an alternative for operations requiring a different reach or a unique approach to the load. The corner mount configuration is advantageous for maximizing the derrick’s operational range and improving accessibility to hard-to-reach areas.

Understanding these configurations is critical for effectively deploying a digger derrick in the field, as they influence both the machine's stability during operation and its overall maneuverability. This knowledge ensures safety and efficiency in rigging practices.