Leveling the Magnetic Playing Field

When the Olivenhain Municipal Water District (OMWD) in Encinitas, Calif., recently mandated a rehabilitative painting of its massive 10 million-gallon, 300-foot diameter Black Mountain Norte potable water tank, it gave advance notice of ?removal/reinstallation? to the multitude of cell phone companies that used the tank as a telecommunications hub for their antennas and cable trays.