1.   A climbing accident had left him paralysed from the chest down.

2.   The accident has echoes of past disasters.

3.   Some believe accident might have had even more serious consequences.

4.   Never had an accident on it.

5.   Although each accident has its own genealogy, a Houston Chronicle study of the offshore industry points to three phenomena that may be contributing to the elevated casualty figures.

6.   Although officials may receive several calls on minor fender benders, sometimes the most serious accidents only have one call.

7.   An accident can have two causes, or two dozen.

8.   Accidents have many causes, from impatience with screaming children in the back seat to simple daydreaming at the wrong time.

9.   But a major accident could easily have a devastating impact on Denver.