the others in the chariot race were primarily Lipizzans. A veterinarian, a harness maker, and 20 stable boys were employed to care for the horses and ensure they were outfitted for racing each day. The firm of Danesi Brothers built 18 chariots, nine of which were used for practice, each weighing . Principal cast members, stand-ins, and stunt people made 100 practice laps of the arena in preparation for shooting. Heston and Boyd both had to learn how to drive a chariot. Heston, an experienced horseman, took daily three-hour lessons in chariot driving after he arrived in Rome and picked up the skill quickly. Heston was outfitted with special contact lenses to prevent the grit kicked up during the race from injuring his eyes. For the other charioteers, six actors with extensive experience with horses were flown in from Hollywood, including Giuseppe Tosi, who had once been a bodyguard for Victor Emmanuel III of Italy. Filming The chariot scene took five weeks (spread over three months) to film at a total cost of $1 million and required more than of racing to complete. Marton and Yakima Canutt filmed the entire chariot sequence with stunt doubles in long shot, edited the footage together, and showed the footage to Zimbalist, Wyler, and Heston to show them what the race should look like and to indicate where close-up shots with Heston and Boyd should go. Seven thousand extras were hired to cheer in the stands. Economic conditions in Italy were poor at the time, and as shooting for the chariot scene wound down, only 1,500 extras were needed on any given day. On June 6, 1958, more than 3,000 people seeking work were turned away. The crowd rioted, throwing stones and assaulting the set's gates until police arrived and dispersed them. Dynamite charges were used to show the chariot wheels and axles splintering from the effects of Messala's barbed-wheel attacks. Three lifelike dummies were placed at key points in the race to give the appearance of men being run over by chariots. The cameras used during the chariot race also presented problems. The 70mm lenses had a minimum focusing distance of , and the camera was mounted on a small Italian-made car so the camera crew could keep in front of the chariots. The horses, however, accelerated down the straight much faster than the car could, and the long focal length left Marton