Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

Dr Paul White, witness for the defence, was forced to concede during cross-examination that he had never heard of propofol being used in a bedroom. The expert, who began his testimony last week, had speculated that Jackson took an extra, lethal dose of the sedative without Dr Murray's knowledge. Dr Murray denies charges of involuntary manslaughter. If convicted, he could face up to four years in jail and lose his licence to practise medicine. Dr Murray has said he administered propofol to Jackson, a powerful anaesthetic normally used in surgery, to help him sleep. After lengthy cross-examination, Dr White, who has been called the "father of propofol", said that the drug was not usually used to treat insomnia, describing it as "complete off-label use of the drug". But he said Dr Murray could have loaded a syringe with propofol and left it in a place where Jackson could access it. Jackson could have woken up from sedation and injected additional propofol into his intravenous (IV) tube, Dr White speculated. During his cross-examination Dr White conceded that Dr Murray may have lied to emergency room doctors when he did not tell them he had given propofol to Jackson in the hours before his death. "I think it was something that he overlooked," Dr White said initially, before admitting lying was an "option". The anaesthesiologist added that Dr Murray should have called 911 earlier. 'Pushing propofol' The prosecution also asked Dr White if he thought Dr Murray had violated the doctor's oath to "do no harm" to his patient. "I think he was providing a service to Mr Jackson that he had requested and in fact insisted on," Dr White replied. But he told the court he would not have accepted such a job. "It's something no amount of money could convince me to take on," Dr White testified. The witness also said when a patient was being given a "relatively small dose" of 25ml it may be acceptable for the doctor to leave his patient's bedside after 15 to 30 minutes. After further questioning, when the prosecution referred to a statement made by Dr Murray that Jackson used to "push the propofol" into himself, the witness said under those circumstances he would not have left the room. It is alleged that Dr Murray left Jackson alone on a propofol drip for two minutes to use the bathroom. When he returned, the singer was unresponsive. After Dr White delivers his testimony, the prosecution and defence are expected to deliver their closing arguments.
Dr Conrad Murray deviated from accepted medical standards in his care for Michael Jackson, a medical expert said.

The project at Nelson's Wharf and the Ferry Steps had been expected to start in March and end in June. Works will now start at the end of next September to avoid holiday season disruption, the Harbour Management Board has said. Part of the scheme will involve driving piles into the ground, which will be heard, and felt, in nearby buildings. The works, at the pavilion end of the harbour, will also lead to some road closures, the Local Democracy Reporting Service has said. 'Hydraulic vibrating' Weymouth and Portland Borough Council has said the section of wall, made of sheet steel in 1960, is badly corroded and at risk of collapse with "localised loss of limestone fill material". The work will involve building a line of new sheet steel piles, driven into the harbour bed. A previous council report on the engineering proposals said: "In the prevalent ground conditions it is unlikely that piles of the required size can be driven by "quiet" methods, using hydraulic rams to push them in, so the piles will probably be driven initially by a hydraulic vibrating hammer and then, when necessary, by hydraulic impact hammer." A report to harbour management board members said that the original proposal would have been disruptive to the local holiday trade and harbour operations.
Repair works to crumbling harbour walls in Weymouth have been delayed until next autumn.

Taj Bola owns the site on Grand Parade in Skegness which was gutted by fire in August 2007. He has promised to come up with a plan for a leisure complex and begin the development within the year. Tourist industry leaders said it had taken too long to replace the buildings but were "delighted" with the news. Mr Bola's plans for a £5m leisure complex were approved three years ago but permission runs out later this month. 'Losing money' "I apologise sincerely from the bottom of my heart," he said. "I talk to residents every day and I'm hoping we can get a resolution and moving things forward. "This needs to happen. A site sitting empty like this is not doing me any favours and I'm losing money on this, so it is in my own interest to get this built." He said an application to extend planning approval for a complex, including bars, restaurants and an ice rink had been submitted to East Lindsey District Council. Nigel Tett, of the Skegness Hospitality Association, welcomed Mr Bola's promise. He said: "It has been an eyesore for the last five years and every year we are told next year something will be done so hopefully this is the last we hear of it. "Holidaymakers who come here often ask when something is going to be done so it will be nice to see something finally built." Related Internet Links East Lindsey District Council

The owner of part of a Lincolnshire seaside resort has apologised for leaving the site in disrepair since it was destroyed by fire five years ago.

