How should a carrier case residual mail?

Placing the bin on the carrier case ledge with stamps down is the proper method for casing residual mail. This positioning allows for easy access to the mail while also ensuring that the stamps, which indicate postage, are not damaged or marred during handling. Additionally, having the stamps facing down can prevent them from catching on other items or being obscured by surrounding materials, thereby maintaining their visibility for future usage.

This method facilitates a more organized arrangement, which is essential in the fast-paced environment of mail delivery. It ensures that any postage is clearly discernible when needed, and it allows for efficient workflow as carriers manage their delivery routes. The choice reflects best practices in the postal service to streamline operations and maintain the integrity of the mail.