Two employees were using a hose to pour concrete during the construction of a concrete wall. Pressure built up at a 90-degree bend in the hose, causing the water to separate from the rock. The hose began to gyrate violently and spray out concrete. One employee was struck on the arm and the leg by the hose, resulting in a fractured arm and leg. The second employee was struck in the face by a mass of concrete that sprayed from the hose, resulting in a broken nose and facial lacerations. Both employees were hospitalized.