CAIRO (AP).- Egypt’s massive new museum for its famous antiquities now has a power plant, a fire station and its own conservation center, and over the next two years it will become home to some 100,000 artifacts, officials said Monday. A partial opening for the 120-acre museum complex, which will house King Tutankhamun’s famed mummy and golden burial effects and a replica of his tomb, is set for the fall of 2012. Plans for the museum, which will replace the century-old building visited by millions annually in Cairo’s heaving downtown, were first conceived in 2002 and it will display more than twice as many artifacts as its predecessor. The museum will eventually house 100,000 artifacts, said Mohammed Ghoneim, the project’s technical consultant said. Tens of thousands of artifacts are currently locked away unseen in the old museum due to lack of space to display them. Egypt’s first lady Suzanne Mubarak on Monday inaugurated the first two phases of the $600 million Grand Museum of