Carmelo Costanzo

in Palermo with the consent of the Mafia. The four entrepreneurs, Carmelo Costanzo, Francesco Finocchiaro, Mario Rendo and Gaetano Graci, were granted

Lavoro (Knights of Labour) of Catania: the construction entrepreneurs Carmelo Costanzo, Francesco Finocchiaro, Mario Rendo and Gaetano Graci – who needed

Calderone clan developed a relationship with the construction entrepreneur Carmelo Costanzo – one of the four Cavalieri del Lavoro (Knights of Labour), together

owned by the four famous entrepreneurs known as Cavalieri del Lavoro—Carmelo Costanzo, Francesco Finocchiaro, Mario Rendo, and Gaetano Graci (one of the

Mafia boss of Catania. Minore was also in business relations with Carmelo Costanzo, dubbed one of "the four horsemen of the Mafia apocalypse" by journalist