1972 Cases (50%20cases) EL-ELECTRIC (3 cases) GA-GAS (5 cases) RC-RADIO COMMON CARRIERS (2 cases) RR-RAILROAD (6 cases) ST-SEWAGE TREATMENT (4 cases) TP-TELEPHONE (9 cases) TR-TRANSPORTATION (15 cases) WS-WATER & SEWER (1 cases) WW-WATER WORKS (5 cases)