Where can supplies be stored other than the designated storage area?

Storing supplies in a designated cross cut is correct because designated cross cuts can serve as temporary storage areas in coal mines. These areas are specifically designed to allow for safe storage while also facilitating the movement of machinery and personnel. During times when access to the main storage area is impeded or when supplies need to be stored closer to the operational areas, using a designated cross cut follows safety protocols and helps maintain efficient workflow within the mine.

Other options may not be practical or safe for storing supplies. For example, using the main entrance can obstruct safe access for personnel and equipment. Storing supplies outside the coal mine can expose them to environmental hazards and security risks. Similarly, while a storage shed could be suitable, if it's not in a designated area, it wouldn't align with the specific safety regulations and protocols for mine operations.