A minute of silence is the most widespread way of commemorating public tragedy. The marble plate is the most widespread permanent monument.

A pantograph has engraved the words un minuto on a 40x40 cm ardesia stone working just for a minute since when the tip of the pantograph touched the ardesia plate so it has been engraved just a portion of un minuto ‘s letters.

The artist periodically remake the artwork with the same materials and the same dimensions.