Which of the following are key OSHA standards relevant to digger derricks?

The correct answer encompasses all the listed OSHA standards, indicating that they collectively address safety and operational guidelines pertinent to digger derricks. Each standard plays a significant role in ensuring that the use of digger derricks adheres to safety protocols, reducing the risk of accidents and promoting safe working conditions.

The standard 1910.67 relates to the use of vehicle-mounted elevating and rotating work platforms, pertinent as digger derricks are often employed for similar lifting and operational tasks. Standard 1910.180 covers the criteria for hoisting equipment, ensuring that all machines are up to regulation for safe usage. On the construction side, standard 1926.601 involves the safety provisions for the operation of motor vehicles, whereas 1926.952 specifically addresses safety measures related to the use and operation of overhead and gantry cranes.

Together, these standards emphasize essential safety measures, equipment requirements, and operational practices that must be followed when using digger derricks, making the combined selection of all these standards the most comprehensive approach to ensuring workplace safety in relation to this equipment.