Sunday, November 1, 2009
These are another set of photos sent in by a reader. These are from the Griffin coal mine in Western Australia.
It looks here like the float has slipped backwards down the wet ramp.
Those chains are looking a bit small for the job.
You can see here that the tracks were muddy before being loaded onto the float. This would have decreased the friction between the excavator and the float.
Yeah, those chains are far too light for the purpose of restraining a 500t load. The only thing holding the excavator to the float was the surface friction of two metal plates with a bit of water and mud in between.
A lot of equipment doesn't get secured onto floats (probably because it would take a crane to lift sufficiently strong chains into place), but if you're going to do a job...
The Komatsu website lists the weight of the PC5500 as 525t, 'including operator'.
Hmm, no flag, beacon or even reflective markings on the light vehicle in the background.