Cinnabar Theater the Aspen Music Festival. She led the Cinnabar Opera Theater in over thirty-five opera productions, including the 2010 West Coast premiere of Tobias Picker's "Emmeline" in addition to conducting productions for Lamplighters Music Theatre, Boise Opera and as Music Director of the Harrower Summer Opera Workshop at the University of Georgia. In 1988, Shuman and Klebe created the Petaluma Summer Music Festival as part of the Cinnabar Arts Corporation, in addition to developing the Cinnabar Chamber Singers and the Cinnabar Choral Ensemble. The theater has also served as a home for dancer/choreographer Ann Woodhead's Mercury Moving Company and the experimental
Metal detector in the chest of American President James Garfield in 1881; the metal detector worked correctly but the attempt was unsuccessful because the metal coil spring bed Garfield was lying on confused the detector. The modern development of the metal detector began in the 1920s. Gerhard Fischer had developed a system of radio direction-finding, which was to be used for accurate navigation. The system worked extremely well, but Fischer noticed there were anomalies in areas where the terrain contained ore-bearing rocks. He reasoned that if a radio beam could be distorted by metal, then it should be possible to design a