In the book, Leaving Vegas: How FBI Wiretaps Ended Mob Domination of Las Vegas Casinos by Gary Jenkins, he explains that, Nick Civella, head of the Kansas City crime family, liked the slot machines for skimming cash from the Stardust, but Carl Thomas explained to him that the silver was too heavy and if someone was caught with a large bag of coins it was obvious the coins are stolen. But if someone has a large amount of cash, no one suspects it was stolen. After rigged scales were discovered at the Stardust casino, where he worked, he explained to Civella how he created a separate count room and bank room for the slot coins. He would put a large amount of cash into the bank and simply change out the skim in coins for cash.