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Iona Ballantyne's late father Bob was one of 61 survivors of the Piper Alpha disaster in 1988.
The deaths of 167 of his colleagues when the platform exploded had a profound impact on him, and he became a vocal campaigner for offshore safety.
His daughter met Lord Cullen - the judge who headed the public inquiry into what went wrong - and he told her he still worries that offshore workers may not feel able to speak out about safety fears.