After months of development and testing, San Antonio-based Lake Truck Lines has unveiled the "silo setter," which designers say will reduce costs in the oil field. Manufactured south of the border in Torreon, Coahuila by affiliate company Lake Manufacturing, the silo setter is a unique tractor-trailer combo that allows two cement silos to be delivered and set up at a drilling pad without the use of a crane. Lake Truck Lines owner Doug Cain said the current models out on the market can only deliver...