J plc is a wholesale building supply business.

J plc is a wholesale building supply business. It has a large warehouse where some of its materials are stored. Last month three accidents occurred where employees were slightly injured whilst moving items from the 5th shelf. The 5th shelf is located 15 metres up from the ground.

This is a health and safety risk and could also be a reputation risk in the longer term.

Which of the following risk mitigations should the company employ?