Hazards involving material handling can lead to serious worker injuries and even death. In particular, workers are at risk of injuries resulting from being struck by, caught between, or crushed by materials, equipment, lifting devices or vehicles. Workers are also at risk of developing musculoskeletal disorders, such as low back or shoulder injuries. Proper material handling prevents these types of injuries. The efficient handling and storing of materials are vital to industry. Activities involving material handling enable the supply of raw materials as well as a continuous flow of parts and assemblies through workplaces and ensure materials are available when needed. Employers are responsible for protecting workers from material handling hazards.