All sorts of conveniences have been devised under a two-way radio system. Radio aids in the speedy repair of equipment and in scheduling and coordination the different operations of a job. It saves production time in getting instructions to men faster and in making faster shifts of men and machinery from one location to another. It helps bring in new business because it gives the contractor a direct line to his office while he's out in the field. It also is a great safety device on the construction job. Above all, radio keeps costs down by speeding up production, bringing needed materials to the job site in a hurry, opening up communication on problems that might othererwise lead to costly errors, and reducing downtime when machinery is being repaired.