Farming.
If the physical labor doesn't get ya' - the equipment will.
Most of those were "common sense not being applied" scenarios...too soggy of ground, too much weight, load not balanced, over-driving your machine, etc...
What I wonder the most about...the last shot. How can you drop a container on a tractor? Were there some unresolved issues between the Dockworkers' and Transportation unions?
Also, I wonder how many of those pics were "terminal" shots? (Operator expired - "Darwin Award" qualifiers?)