A front end loader was digging into a quarry aggregate stockpile when its front offside tyre suddenly exploded. No other vehicles or pedestrians were in the area and the operator was unharmed.
Site cctv footage shows a bulge develop on the sidewall of the tyre shortly before it exploded. Footage from earlier in the day appears to show (but not conclusively) some sidewall deformation already present.
No defects were reported when the operator carried out his daily pre-start safety checks.