Fatal Boom Overturn
Two men in Arizona died when the lift they were using to paint the outside of a prison building overturned.
The boom was almost fully telescoped and had been raised to its maximum elevation when it tipped over backwards indicating that reports of it being on a slope of more than five degrees have some substance.
Incidents like this should never happen, one of the most basic aspects of any training stress the importance of setting up aerial lifts on firm level ground, yet this is the second incident this week involving people operating on a slope.