BIRMINGHAM, Ala. (AP) -- A 650 foot-long, 10-foot high railroad trestle that collapsed under a train hauling segments of space shuttle booster rockets had reopened only hours earlier after repairs. Authorities said today an investigation should determine whether the work was a factor in the accident, which occurred near the Myrtlewood community in Marengo County.

   Officials said the same train had derailed days earlier in
Kansas and there appeared to be no link between the accidents.
NASA, meanwhile, said the shuttle's schedule should not be
affected by the derailment since the booster manufacturer,
Utah-based ATK Launch Systems has replacements in stock.

   Six workers were injured when the train carrying eight solid
rocket boosters derailed Wednesday morning about 9 a-m. The train
was headed to NASA's Kennedy Space Center in Florida with booster
pieces intended for shuttle launches in October and December.

   Officials said none of the injuries were life-threatening and
the crash site does not pose a threat to the public. The company said the trestle was tested before the approach of the train, which consisted of two engines and 14 cars.