Anna Ryder Richardson's husband Colin MacDougall will be sentenced today after he pleaded guilty to charges relating to health and safety breaches at the couple's west Wales wildlife park.
Ms Ryder Richardson was cleared of two safety breaches following an incident in which a young boy was seriously hurt when a tree branch fell on him and his mother.
Colin MacDougall pleaded guilty to four charges in court last Monday - two in his own name and two on behalf of the company, Manor House Wildlife Ltd, which the couple own together.
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Philip Thomas was a 10-year-old pupil at Pantglas Junior School in Aberfan when a coal tip collapsed and slid downhill.
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Until 21st October 1966, Aberfan was a place that most of the world had never heard of.