hillsborough disaster
Managing "potentially lethal" stadium was like "giving a captain a sinking ship", court told.
The 74-year-old denies the gross negligence manslaughter of those who died.
The match commander had been appointed to the role three weeks before the match.
David Cannon gave evidence at the trial of match commander David Duckenfield.
Expert believes safe capacity of the stadium was about 30% lower than the number of tickets sold.
"I was being rammed against that barrier."
"I will never forget. Never forget."
Graham Mackrell was secretary and safety officer for the club at the time of the Hillsborough disaster, court hears.
The trial of match commander David Duckenfield is ongoing.