An example of Fuchsite, a silicate-type rock containing mica. File photograph: Getty Images

The Health Service Executive says there is no evidence that a mineral blamed for defects in hundreds of houses in three counties also has ill-effects (...)

The blocks have begun to crack and disintegrate, evidenced by cracked cement stucco, or plaster, covering the blocks. Photograph: PA

A former senior local government official has been asked to head a panel of experts looking into why concrete blocks used in buildings in Co Donegal a(...)