Father-of-two Mark Thornton, 46, died in March last year when a crane carrying a steel beam collapsed at Wavertree Technology Park, Liverpool, crushing him.
Mr Thornton, the son of former Longridge and Ribble Valley mayor Bernard Thornton, was working for Longridge-based company Siteweld Construction when the incident ha ppened.
It is understood that he was killed instantly in the tragedy.
His death was the third construction-related fatality in the city last year.
On Monday, Liverpool coroner Andre Rebello dismissed the jury after hearing new evidence had come to light that might prejudice what had already been heard.
Mr Rebello said the new evidence required further investigation, possibly taking months.
He offered his condolences to Mr Thornton's family, saying: "It is most unfortunate we cannot proceed and enable closure for Mr Thornton's loved ones.
"However, for true closure, the real truth must come out."
Mr Rebello scheduled another hearing for October 14.
Mark Thornton grew up in the family home in Kestor Lane, Longridge, the only son of Mrs Thornton and her late husband Bernard.
He attended St Wilfrid's RC primary and St Cecilia's High schools, and was an altar boy at St Wilfrid's Church.
As a youngster, he was active in the cubs and scouts, was a member of Longridge Youth Club for many years, played in junior cricket teams and was a junior member of Longridge Golf Club.
Following his apprenticeship at Taylor and Russell, he qualified as a welder/plater after attending Kent Street Training School and Tuson College on day release and at night school.
He later worked for Fred Wareing as a steel erector, before his work took him all over the United Kingdom and, for some time, in Germany.
Mark's keenness for golf continued in his membership of the golf club, where he became a senior member, and he thoroughly enjoyed playing darts and dominoes for the club's league.