South Korean workers carry clothes, products from North Korea's Kaesong, from a van to another van after returning from there at Unification Bridge in Paju, South Korea, near the border village of Panmunjom, Saturday, April 6, 2013. Since April 3, North Korean authorities have barred South Koreans from entering North Korea through the Demilitarized Zone to get to the Kaesong industrial complex where some 120 South Korean companies run factories employing North Korean workers.