Are there any records of fatal accidents which happened during the building poulaphouca reservoir in Ireland?

Yes, there were fatal accidents during the building of the Poulaphouca Reservoir in Ireland.

Here are a few examples:

- In November 1942, a worker named Christopher Hughes was killed in an accident involving the lifting tackle when a concrete block fell on him.

- In January 1943, a worker named Bernard O'Brien was killed when he was struck by a falling concrete bucket while working on the site access bridge near Golden Grove.

- In January 1944, a worker named William Byrne died from injuries sustained when he fell from a height of 16 feet onto a concrete floor while working on the construction of a powerhouse at the dam site.

- In April 1944, two fatalities happened after a collapse of a tunnel roof resulting in the deaths of miners Robert McCartan and John Mulhern as they were excavating a water diversion tunnel.