If you are in construction as I am then you can relate to this. I have had to investigate more than my share of accidents as a Supervisor of a masonry crew but this is one I'm glad I wasn't involved in. If you ever thought you had a bad day read this and compare.
This is an actual accident report that was written in the British equal to the Workers Compensation Board.

"Dear Sir:
I am writing in response to your request for additional information in Block #3 of the accident report form. I put "poor planning" as the cause of my accident. Your asked for a fuller explanation and I trust the following details will be sufficient.
I am a Bricklayer by trade . On the day of the accident, I was working alone on the roof of a new six story building. When I completed my work, I found I had some bricks left over which, when weighed later were found to be in excess of 500 lbs. Rather than carry the bricks down by hand I decided to lower them in a barrel by using a pulley, which was attached to the side of the building at the sixth floor. Securing the rope at ground level, I went up to the roof , swung the barrel out and loaded the bricks into it. Then I went down and untied the rope holding it tightly to insure a slow descent of the bricks.
You will note in Block #11 of the accident report form that my weight is 135 Lbs...
Due to my surprise at being jerked off the ground so suddenly, I lost my presence of mind and forgot to let go of the rope. Needless to say, I proceeded at a rapid rate up the side of the building. In the vicinity of the third floor, I met the barrel which was now proceeding downward at an equally impressive speed. This explains the fractured skull, minor abrasions and the broken collarbone, as listed in Section 3 of the accident report form.
Slowed only slightly, I continued my rapid ascent, not stopping until the fingers of my right hand were two knuckles deep into the pulley. Fortunately by this time I had regained my presence of mind and was able to hold tightly to the rope, in spite of the excruciating pain I was now beginning to experience.
At approximately the same time, however, the barrel of bricks hit the ground and the bottom fell out of the barrel. Now devoid of the weight of the bricks, that barrel weighed approximately 50 lbs......
I refer you again to my weight.
As you might imagine, I began a rapid descent down the side of the building. In the vicinity of the third floor, I met the barrel coming up. This accounts for the two fractured ankles, broken tooth and severe lacerations of my legs and lower body.
Here my luck began to change slightly.
The encounter with the barrel seemed to slow me enough to lessen my injuries when I fell into the pile of bricks and fortunately only three vertebrae were cracked.
I am sorry to report, however, as I lay there on the pile of bricks, in pain, unable to move, I again lost my composure and presence of mind and let go of the rope and I lay there watching the empty barrel begin its journey back onto me. This explains the two broken legs.
Yours.........