Date: Fri, 12 Apr 1996 04:28:40 -0400 11 April 1996 (Reuter) - Forty-three African states signed a treaty declaring Africa free of nuclear weapons at a ceremony marred by Russian reservations about the document. The Treaty of Pelindaba, named after the birthplace of the nuclear arsenal which South Africa later dismantled, bans the possession or deployment of nuclear weapons throughout the African continent and the islands around it. 11 April 1996 (Reuter) - The head of a U.S.-led consortium to build two nuclear reactors in North Korea said that preparations were going smoothly and some construction work might begin in June or July. Stephen Bosworth, director of the Korean Peninsula Energy Development Organisation (KEDO), told Kyodo news service that the project "continues to move ahead in a satisfactory manner." 11 April 1996 (Reuter) - Vladimir Usatenko, one of the workers who cleaned up Chernobyl's radioactive fallout, said he had lost his teeth, much of his eyesight and all hope of a long life due to the world's worst nuclear accident. The Ukrainian technician was 37 in April 1986 when Reactor Four at the Chernobyl nuclear power plant exploded, hurling chunks of the radioactive core 1.5 km (one mile) into the sky and spreading a toxic cloud over most of Europe. 11 April 1996 (Reuter) - Egyptian President Hosni Mubarak, opening a ceremony at which up to 53 African states will declare their continent free of nuclear weapons, called for a similar zone in the Middle East. Israel, Egypt's neighbour and rival, is widely believed to have nuclear weapons. It says it will discuss its nuclear programme only after peace throughout the region. 11 April 1996 (UPI) - Representatives of the United States and 45 African nations signed a treaty pledging to keep the African continent free of nuclear weapons. Foremost among the signatories was South African Foreign Minister Alfred Nzo, representing the only African state with an admitted nuclear capacity. 11 April 1996 (UPI) - The rapid pace of technological change and growth poses new challenges for the Pentagon to control the spread of chemical, biological and nuclear weapons, Defense Secretary William Perry said. Perry, unveiling a Pentagon report on the proliferation of weapons of mass destruction, said that "no matter how backward a country economically, today it can still have the capability to build reactors and to generate plutonium as was demonstrated by North Korea." Among the concerns facing the Pentagon are that some technology and products that were once under international controls "are now available essentially by mail order from Radio Shack," Perry said.