Warning signs may not have prevented a teenage apprentice plumber being crushed to death, a sheriff has said.
Michael Scott, 18, of Oldmeldrum, died after a pile of MDF sheets fell on him at APH Services at Aberdeen Harbour in December 2006.
A fatal accident inquiry was held into his death.
Sheriff Douglas Cusine said in his written judgement that he could not say if a warning on the sheets could have prevented the accident.
The FAI had heard calls that each sheet should be stamped with a warning about how they should be stored.
The sheriff said: "Any recommendation about reasonable precautions can only be made if I am satisfied that the accident might have been avoided had this warning on the sheets been there.
"As it is not possible to say, on the basis of the evidence, how the accident took place, it would not be sensible or appropriate for me to say that a warning might have prevented it."
He said there were no reasonable precautions which could have been taken by plumbing boss Steven Anderson to avoid the accident which resulted in Mr Scott's death, and no defects in the system of working.
Mr Anderson had found the teenager pinned against a wall by the 20 sheets of MDF. He could not be saved.
The sheriff expressed his condolences to the family of Mr Scott.