A labourer met a tragic death under wheels of a loader while another was badly injured in an accident at the pump storage plant of Tehri dam on Tuesday morning.The mishap occurred at tunnel number 6. The deceased was identified as Vijendra Singh (22), a native of Himachal Pradesh. Police was informed and the injured was rushed to a hospital.The accident occurred when a driver of a loader began backing up the vehicle in the area.He failed to see that two labourers were standing behind the vehicle, SP Tehri Mukhtar Mohsin said. Investigation is underway.