South Korea has urged Japan to look into unresolved issues... before pushing ahead with the registration of what Tokyo sees as historically important sites on the UNESCO World Heritage list.<br />After conducting independent research,... a committee under Korea's Prime Minister's Office said Wednesday that more than 15-hundred Koreans were coerced to work by five Japanese companies during Japan's colonial rule of Korea.<br />Japan is pressing for Hashima - once a coal-mining hub - and 22 other landmarks of Japan's industrialization to be certified by UNESCO.<br />The use of slave labor was even worse during World War II... with an estimated 60-thousand Koreans forced to work in unbearable conditions.<br />The committee also urged Tokyo to return to Korea the remains of forced laborers who died at those sites.
