Shipments of metal halide high intensity discharge (HID) lamps grew by 4.6 percent to 87.1 during the third quarter of 2010. The index showed solid year-over-year growth increasing 5.7 percent. Conversely, sodium vapor HID lamp shipments retrenched 10.4 percent during the quarter to 82.1, the second lowest level on record for the index. Mercury vapor [...]