|Mary Grooms turned on a "twin" to the Livermore Centennial Light Bulb in a ceremony last week at Fire Station #6 in Livermore. A Shelby light bulb belongin to Livermore has been burning for 100 years. Marys father was given the Shelby light bulb when he lived in Livermore. He took the light bulb with him when he moved and later gave it to Mary. Mary, who lives in Colorado, brought her Shelby with her on a visit to Livermore to see if the bulb would light up. It still has the Shelby label on it and as far as can be determined was never used, because the first one hasn't burned out yet.