Concrete Block / Paver Machine Operator, Besser, Columbia, Tiger, Masa, Hess, Omag, Rekers C oncrete I ndustry A ssociates Employment Agency operates as a national level / industry specific recruitment service for both employers and employees of the Manufactured Concrete Products Industry. CIA is hired by many of the the nations finest corporations to locate and provide experienced concrete block / paver / srw / architectural plant personnel. Opportunities exist for people who have run: Besser, Tiger, Columbia, Masa, Rekers, Zenith, Omag plants . Positions : Block Machine Operators, Paver Machine Operators, Supervisors, Superintendents, Plant Managers, Operations Managers, Maintenance, Quality Control. ...