Through the analysis of a series of different documents preserved in the Fondo Tremaglia, I reconstruct the genesis and development of the National Day of Italian Labour Sacrifices in the World (Giornata nazionale del sacrificio del lavoro italiano nel mondo). The holiday was conceived by Minister for Italians in the World Mirko Tremaglia and designated by Prime Minister Silvio Berlusconi at the end of 2001. The analysis focuses on the recovery and exaltation of the memory of the Italian miners who died in the Marcinelle mining disaster in 1956, on the political and cultural dynamics of Italy at the time, and on Tremaglia’s saloino (he voluntarily joined the Italian Social Republic and was enlisted in the National Republican Guard) and missino (term used to refer to the members of the Movimento Sociale Italiano) past. The result is a multifaceted scenario for a commemoration that still exists today, but is largely unknown in the country where it was created.