It will determine whether safety breaches led to the crash.
The four charges all relate to alleged health and safety breaches.
For years, safety breaches were covered up and regulators looked the other way.
Pervasive corruption means local officials often turn a blind eye to safety breaches.
In 2001, the Health and Safety Executive issued three compliance notices for safety breaches at Buncefield against the agency.
6.34pm: Entertaining Jeremy Clarkson story soon: he describes his viewers as "oafs" and admits to health and safety breaches.
She was also cleared of health and safety breaches, along with Keith Berry, Park headmaster at the time.
The union has an established mechanism that allows national authorities to share information routinely about safety breaches.
The council's spokesman on consumer protection Cllr Jonathan Cook said: "This was a shocking catalogue of hygiene and food safety breaches.
But it emerged that prosecutors also considered charges of gross negligence, misconduct and health and safety breaches against those in charge of the operation.
As for jumping from the boat on to the rope that holds the hot air balloon, too many health and safety breaches to mention.
