An industrial investment at Ballymount Industrial Estate, Dublin 12, has been sold at a Finnegan Menton auction for £530,000. The 11,600 sq ft unit is let to Electronic Recycling at a current rent of £30,000. The initial yield is 5.2 per cent, one of the lowest in sector in the Dublin market this year. The tenant can avail of a break option in the lease in December, 1999.