Telephone communications (no radiotelephone)18Metal mining16Gold and silver ores13Primary smelting & refining of nonferrous metals11Airports, flying fields & airport terminal services10Fats & oils8Surgical & medical instruments & apparatus8Electronic components, nec6Printed circuit boards6Services-auto rental & leasing (no drivers)6Heavy construction other than bldg const - contractors5National commercial banks5Petroleum refining5Poultry slaughtering and processing5Railroad switching & terminal establishments5Retail-catalog & mail-order houses5Engines & turbines4Industrial organic chemicals4Retail-miscellaneous retail4Blank checks3Bottled & canned soft drinks & carbonated waters3Glass containers3Grain mill products3Industrial instruments for measurement, display, and control3Paperboard mills3Perfumes, cosmetics & other toilet preparations3Pharmaceutical preparations3Retail-variety stores3Services-business services, nec3Services-management consulting services3American depositary receipts2Construction - special trade contractors2Orthopedic, prosthetic & surgical appliances & supplies2Real estate2Retail-grocery stores2Services-computer integrated systems design2Services-computer processing & data preparation2Services-engineering services2Services-prepackaged software2Special industry machinery, nec2State commercial banks2Agricultural production-crops1Agricultural services1Beverages1Biological products, (no disgnostic substances)1Cable & other pay television services1Converted paper & paperboard prods (no contaners/boxes)1Crude petroleum & natural gas1Deep sea foreign transportation of freight1Electromedical & electrotherapeutic apparatus1
