Clearing up Work on removing the bodies and clearing the wreckage from the tunnel began after the last casualty had been removed. With no casualties remaining, the Fire Brigade were able to use
flame cutting equipment. After the third carriage was cut free from the second, at 1:00 am on 1 March the third carriage began to be winched back down the track; as it began moving a body that no-one had seen fell from the wreckage and onto the track. According to
Joseph Milner, the
chief fire officer of the London Fire Brigade, the body gave "the first indication of how protracted would be the work ahead". Once the carriage had been removed, a doctor again checked for further signs of living casualties; none were found. is incorporated in the main controller on the right The use of the flame cutting equipment had a detrimental effect on the atmosphere on the platform. Oxygen levels dropped from the norm of 21 per cent to 16 per cent and the smell of decomposition from the bodies trapped in the wreckage was noticed by workers. Those working on the platform or tunnel were restricted to 20-minute spells working, followed by 40 minutes' recovery time on the surface. All workers had to wear gloves and masks; any cuts had to be reported, and no-one with a cut was allowed to be involved in the extrication of a body. Temperatures improved after a company donated an
air conditioning unit, which was installed at ground level, and the air piped down into the tunnel. During 1 and 2 March the wreckage of the second carriage was cut away in sections and winched free; clearance of the carriages continued round the clock until a break was forced by a telephoned
bomb scare at 10:00 pm on 2 March, which forced the crews to evacuate the station. The last passenger was removed from the front carriage at 3:20 pm on 4 March, which left only the driver's body. Gordon Hafter, London Underground's chief engineer, and Lieutenant Colonel Ian McNaughton, the Chief Inspecting Officer of Railways, examined the driver's cab; normally deep, it had been crushed to . They ascertained that Newson was at his controls, although his head had been forced through the front window. Hafter reported his examination about Newson to the subsequent inquiry: His left hand was close to, but not actually on the driver's brake handle and his right arm was hanging down to the right of the main controller. His head was to the left of the dead man's handle which had been forced upwards, beyond its normal travel, and was resting on his right shoulder. Newson's body was removed at 8:05 pm on 4 March; the Fire Brigade cleared the remainder of the wreckage by 5:00 am on 5 March and handed control of the platform back to London Underground. The rescue and clean-up operation involved the efforts of 1,324 firefighters, 240 policemen, 80 ambulance men, 16 doctors and several nurses. Services on the line had been suspended on the day of the crash. A shuttle service between Drayton Park and Old Street was used from 1 March 1975 until normal traffic returned on 10 March.
Investigation and inquiry The
post-mortem was undertaken on Newson by the
Home Office pathologist Keith Simpson on 4 March 1975. He found no physical conditions, such as a
stroke or
heart attack, that would have explained the crash. Initial findings showed no drugs or alcohol in Newson's bloodstream, and there was no evidence of liver damage from heavy drinking. On 7 March 1975
Anthony Crosland, the
Secretary of State for the Environment, instructed McNaughton to undertake an investigation of the crash. McNaughton's inquiry began on 13 March and was paused after a day and a half; during that time it was established that the mechanics of the train were in working order and that there were no known problems with Newson's health, although the results of pathological tests were still awaited. McNaughton said he was perplexed as to the causes of the crash, but that he would proceed with the next part of his inquiry, which was to undertake further enquiries and to consider measures so the accident could not be repeated. The
coroner's
inquest was held between 14 and 18 April 1975. David Paul, the coroner, was unhappy that a government inquiry had already begun, as evidence was in the public domain, and could affect the
inquest's jury. Sixty-one witnesses gave evidence. An analysis of Newson's kidneys by the
toxicologist Anne Robinson showed his
blood alcohol level at the time of the post-mortem was 80 mg/100 ml. Robinson stated that there were several biological processes that produced alcohol in the body after death, and it was not possible to reach a definite conclusion as to whether this was the result of consumption of alcohol or a product of the process of
decomposition. She added "there are so many unknown factors here that it is difficult to be precise and definite. One has to make a number of assumptions", although she stated that it was likely that he had been drinking. 80 mg/100 ml was—and, as at 2022, still is—the legal limit in England for driving. It was the highest reading of four samples taken from Newson's body; the lowest was 20 mg/100 ml. Newson's widow stated that her husband drank spirits only rarely; David Paul agreed that it was out of character with all he had heard, and agreed that further tests could be run on Newson's samples. On the final day of the inquiry, Roy Goulding, a specialist in the forensic examination of poisons, stated that while he reached the same results of 80 mg/100 ml, his conclusions differed from Robinson's; Goulding stated that as alcohol was naturally produced in the blood after death, it was not possible to confirm that Newson had been drinking prior to the crash. Several of Newson's colleagues reported that they had no suspicions that Newson had been drinking, and that his behaviour on the morning of the crash was normal. David Paul asked Simpson to comment on the findings relating to alcohol levels. He informed the coroner that "it is generally accepted that as much as 80 mg/100ml may make its appearance in a decomposing body after four days in a [relatively] high temperature". The jury returned verdicts of
accidental death. On 19 March a memorial service was held at
St Paul's Cathedral, London, attended by 2,000 mourners, including representatives of the emergency services and Newson's widow and family. McNaughton published his report almost a year later, on 4 March 1976. He wrote that tests showed no equipment fault on the train, and that the dead man's handle had no defect. From
X-rays it was clear that at the moment of the crash Newson's hand was on the dead man's handle. There were no electrical burns on his skin or clothing to indicate an electrical fault. McNaughton observed that because of Harris's lack of experience, he could not have taken any action to stop the accident from happening, although he thought the young man "displayed himself as idle and undisciplined". He concluded that "the accident was solely due to a lapse on the part of the driver, Motorman Newson". Given the inquest findings relating to alcohol in Newson's bloodstream, McNaughton examined the possibility that Newson was drunk. He received expert advice that even if Newson had drunk sufficient alcohol to achieve a blood alcohol level of 80 mg/100 ml, it would not account for the crash. McNaughton also examined the possibility of suicide by Newson, but considered it unlikely, given other indications, including Newson's plans for purchasing a car later in the day and that he had driven the route without error for the preceding 2 hours. During the inquest Harris testified that Newson had also overshot a platform three or four days before the accident, and a passenger had also reported a second overshoot by Newson that week. The suicide expert Bruce Danto stated of the overshoots, "that does not sound like misjudgment to me. That sounds like a man who is getting the feeling of how to run a train into a wall". McNaughton investigated the possibility that Newson may have been daydreaming or distracted to the point that he did not realise the train was entering Moorgate. McNaughton concluded that as the train went over the scissor crossing before the platform, it would have brought the driver to his senses. It was also likely that Newson would have realised his circumstances before the train hit the wall, and would have thrown his hands up in front of his face in a reflex action. Medical evidence presented to the inquiry raised the possibility that the driver had been affected by conditions such as
transient global amnesia or
akinesis with mutism, where the brain continues to function and the individual remains aware, although not being able to move physically. There was no evidence to indicate either condition: to positively diagnose akinesis with mutism would depend on a microscopic examination of the brain, which was not possible because of decomposition, and transient global amnesia leaves no traces. McNaughton's report found that there was insufficient evidence to say if the accident was due to a deliberate act or a medical condition. I must conclude, therefore, that the cause of this accident lay entirely in the behaviour of Motorman Newson during the final minute before the accident occurred. Whether his behaviour was deliberate or whether it was the result of a suddenly arising physical condition not revealed as a result of post-mortem examination, there is not sufficient evidence to examine, but I am satisfied that no part of the responsibility for the accident rests with any other person and that there was no fault or condition of the train, track or signalling that in any way contributed to it. ==Legacy==