CODE | INDUSTRY |
AU | ALL UTILITIES |
BR | BRIDGE |
BS | BUS |
BT | BUS & TRUCK |
CC | COOLING |
CT | COMPETITIVE TELEPHONE |
DE | DEPOT |
EL | ELECTRIC |
GA | GAS |
GE | GAS & ELECTRIC |
HC | HEATING & COOLING |
HT | HEATING |
PL | PIPE LINE |
RC | RADIO COMMON CARRIERS |
RR | RAILROAD |
ST | SEWAGE TREATMENT |
TP | TELEPHONE |
TR | TRUCK |
WW | WATER WORKS |
WS | WATER & SEWER |