A huge concrete plant capable of putting out 1,450 tons per hour was installed, and a pair of cableways with movable towers (with capacities of 50 and 25 tons respectively) spanned the canyon, carrying the concrete buckets to their final destinations on the steadily rising crest of the dam. The concrete was poured into modular high wooden blocks or "forms", the largest measuring up to by ; more than 3,000 of these blocks made up the main structure of the dam. Once the concrete cured, the wooden scaffolding was removed and shifted upwards to accommodate the next load of concrete. As more efficient methods of concrete pouring were installed, including conveyors and remotely controlled buckets, the workforce gradually decreased. By late 1962, concrete was being poured into the dam at a rate of per day even as the workforce was scaled down to about 1,500.