What is required to obtain a permit for multiple shots when shooting rock?

To obtain a permit for multiple shots when shooting rock, it is necessary to have a multiple shooting permit. This is important because regulations in mining control the use of explosives to ensure safety and compliance with legal standards. Multiple shots refer to the simultaneous use of explosives in different locations, which can be more complex and potentially hazardous if not properly regulated. A specific permit helps ensure that the necessary precautions and procedures are followed, thus reducing the risk of accidents and ensuring that blasting activities are conducted safely and effectively.

The other options do not directly pertain to the requirement for multiple shots. While written permission, permits for non-permissible blasting devices, and approvals for new ventilating openings may be relevant in certain contexts, they do not specifically address the need for a valid permit for executing multiple shots in blasting operations. Therefore, only a multiple shooting permit aligns with the requirements set forth for safely conducting such activities in underground mining.