TUZLA, Bosnia, July 11 (Reuter) - World women leaders joined Bosnian Moslem refugees on Thursday to sombrely mark the first anniversary of the bloody fall of Srebrenica, while Serbs who swept into the town celebrated its "liberation". As Moslems and Serbs staged wildly different commemorations of Srebrenica, U.N. war-crimes investigators pressed ahead with their first excavation of a mass grave believed to contain some of the thousands of Moslems missing since the conquest. Inquiries by the International Criminal Tribunal on former Yugoslavia (ICTY) indicate anywhere from 3,000 to 8,000 Moslem men and boys were massacred by separatist Serb forces as they fled Srebrenica, a supposed U.N. "safe area." The different meaning attached by Serbs and Moslems to an event that independent observers agree spawned Europe's worst waratrocity since the Nazi Holocaust only underscores the irreconcilable attitudes that make the new peace a tenuous one. Jordan's Queen Noor and Emma Bonino, European Commissioner for humanitar

ian issues, led a large group of prominent women from abroad who came to the Bosnian government city of Tuzla, home for most Srebrenica exiles, for an anniversary ceremony. The foreign dignitaries hoped to make a difference for some 30,000 Srebrenica refugees, mostly women, children and old people, who live in penury and disillusionment, pining for their missing male loved ones. "We came here with all our hearts, our feelings of solidarity. We are here today to try to remember and to look ahead," American-born Queen Noor said on arrival. The women leaders were expected to call in the afternoon ceremony for justice against the killers of Srebrenica and greater world attention to the needs of its victims. They also planned to present tonnes of medicines and $8 million to help refugees recoup from war and found businesses. For their part, Srebrenica women were to unveil a giant banner embroidered with names of their missing men. Srebrenica exiles condemn a world which first failed to back up a U.N. promise to p

rotect their enclave from war, then to act quickly and help them recover from the loss. "Wherever we are, we live like we are waiting at some mythical bus station to go home," said Fatima Huseinovic, 49, leader of the vocal Srebrenica women's union in Tuzla. But their homes in Srebrenica, located in eastern Bosnia near the Drina River border with Serbia, have been occupied with Serbs who fled from other parts of Bosnia assigned to the Moslem-Croat federation by the Dayton peace treaty. Serbs marked July 11 as the day when they "liberated" a town in what they regarded as "Serb land" from time immemorial, although Srebrenica and large parts of eastern Bosnia had a Moslem majority until 1992. Serbs in Srebrenica also planned to present a book about an alleged Moslem massacre of Serb civilians in the area during the war and unveil a bust of a dead Serb army commander. ICTY investigators kept digging up a grave site to build evidence supporting genocide indictments against Bosnian Serb leader Radovan Karadzic and

commanding General Ratko Mladic. In the Bosnian capital Sarajevo, President Alija Izetbegovic, a Moslem, appeared at a Srebrenica commemorative service in a concert hall where he broke down and wept at the end of his comments, broadcast on state television. "Let us remember all innocent victims of Srebrenica and all innocent women and children killed by a criminal's hand in this imposed and unjust war. They will not be forgotten." Colum Murphy, spokesman for the international team implementing civilian aspects of the Dayton peace treaty, said on Thursday the world had let Srebrenica's innocents down and was duty-bound to punish culpable Serbs. "What is needed is a greater international community -- more determined and willing to act ... It is time for plain words, either indicted leaders are arrested or they will arrest the peace process. This is what they are doing. They are damaging Dayton right now," he said. In Bonn, 50 people -- including seven women from Srebrenica and other Bosnian refugees -- laid a

long an avenue 8,000 sheets of paper bearing question marks to symbolise the enclave's missing.