The graves of 42 children were found during a scan in 2019.
Engineers have carried out an examination at the grounds of a former mother and baby home, in an effort to locate hundreds of children's' graves.
It was carried out on Monday at Seán Ross Abbey in Roscrea, following years of campaigning by the 'We Are Still here' group.
According to the Irish Examiner, at least 1,091 children died while in the home between 1931 and 1969.
However the last time the grounds were scanned in 2019, only 42 graves were discovered.
There has to be answers to the questions somewhere - that's the hope "We Are Still Here," is holding onto.
Member Teresa Collins, who was born in the Abbey, says they just want the truth:
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