Guardian: A company controlled by Total and Chevron has been found guilty of host of grave safety failures that led to the Buncefield oil depot explosion and the largest fire in peacetime Europe. Hertfordshire Oil Storage Limited (HOSL), which was owned by the oil conglomerates, was found guilty of failing to prevent major accidents and limit their effects, it was revealedtoday. The guilty verdict followed one of the most complex corporate criminal trials of its kind and is a major blow …