 They earned some money with cigarette smuggling and ran an Agip petrol station, thanks to a franchise they acquired through Christian Democrat politician Graziano Verzotto.Giuseppe Calderone and senator Graziano Verzotto were the best man at the marriage of the Mafia boss from Riesi in the province of Caltanissetta, Giuseppe Di Cristina.In the beginning of the 1970s, the Calderone clan developed a relationship with the construction entrepreneur Carmelo Costanzo – one of the four Cavalieri del Lavoro (Knights of Labour), together with Francesco Finocchiaro, Mario Rendo and Gaetano Graci – who needed the mafiosi for protection.