images hard_hat_workers2013.png 416 416 3 0 helmet Unspecified 0 0 0 137 104 163 136 helmet Unspecified 0 0 0 180 85 250 180 helmet Unspecified 0 0 0 160 111 176 133 helmet Unspecified 0 0 0 137 0 163 32 helmet Unspecified 0 0 0 180 0 251 52 helmet Unspecified 0 0 0 160 3 176 25