内容摘要：The US non-profit organisation Consumer Reports tested samples from ten of the most popular brands of synthetic braiding hair, and found that all of them contained carcinogens, and in some cases, lead.

The US non-profit organisation Consumer Reports tested samples from ten of the most popular brands of synthetic braiding hair, and found that all of them contained carcinogens, and in some cases, lead.

The final death toll was later revealed to be 56. Fifty-four were Bradford supporters, while the other two were Lincoln fans Bill Stacey and Jim West. A stand at Lincoln's Sincil Bank ground is named after them as a lasting tribute.Helm recalls interviewing supporters later, including one man who was able to escape by clambering over the wall and onto the pitch, but who could only watch as his elderly father was fatally trapped, unable to make the climb himself.

"Those are the sort of chilling stories... it's sending a shiver up my spine now to be honest just talking about it," the commentator says, adding that he has never been able to look back at the footage of the day."It's still extremely raw, even 40 years on."A common strand between Helm and Jackson's stories is a workplace approach to trauma and grief that was very much of its time.

Helm asked for the following day - a Sunday - off work but was told he had to go to the Odsal Stadium, also in Bradford, to present speedway coverage as scheduled."I did it, but on the understanding that I'd then have a week off because I was traumatised without question," he explains.

"I probably should have had a little bit of counselling, which I never did have."

Jackson, meanwhile, says he and his fellow players "never got any help or support" as he began organising squad trips to attend funerals, charity events and to visit the injured in hospital.The files have been published in a new book, The Murderer Who Must Be Saved, by French investigative journalists Karl Laske and Vincent Nouzille, and Libyan activist Samir Shegwara.

Mr Shegwara - who took part in the uprising against Gaddafi in 2011 - told the reporters the documents were retrieved from the archives of Libya's former intelligence chief Abdullah Senussi, who was named as a Lockerbie suspect in 2015.The journalists spent four years checking their contents with contacts and against information already in the public domain.

Mr Nouzelle said: "Samir Shegwara's not interested in money or in revenge."He just wants these documents to go public for truth and for history and for justice.