| C01 — ELECTRICAL CONTRACTOR | C27 — TREE TRIMMING |
C02— GEN. BUILDING | C28 — DEMOLITION |
CO3— GEN. ENGINEERING | C29 — FINISHED CARPENTRY |
C04 — HEAT, VENT, COOLING | C30 — UNDERGROUND UTILITY |
C05 — MULTIFAMILY CONTRACTOR | C31 — LOCKSMITHS |
C06 — PIPING CONTRACTOR | C32 — COMMUNICATION NETWORK |
C07 — PLBG. CONTRACTOR | C33 — ASBESTOS REMOVAL |
C08 — RESIDENTIAL CONTRACTOR | C34 — SEPTIC & SEWAGE SYSTEM |
C09 — DRYWALL | C35 — WELL DRILLING |
C10 — EXCAVATION | C36 — ELEVATOR INST/REPAIR |
C11 — LANDSCAPING | C37 — INDUSTRIAL MACHINERY |
C12 — MASONRY | C38 — TV CABLE INSTALL |
C13 — REMODELING & REPAIR | C39 — WINDOW INSTALLATION |
C14 — RESIDENTIAL ASPHALT | C40 — SIGN INSTALLATION |
C15 — RESIDENTIAL CONCRETE | C41 — FENCING |
C16 — RESIDENTIAL POOLS | C42 — UNDGRD. STORAGE TANKS |
C17 — RESIDENTIAL SIDING | C43 — PREFAB HSG/LOG HOME |
C18 — ROOFING | C44 — SITE CLEARING |
C19 — STEEL ERECTION | C45 — RECLAMATION |
C20 — LOW VOLTAGE SYSTEMS | C46 — CLEANROOM CONSTRUCTION |
C21 — MANUFAC. HOME INSTALL | C47 — ABV GRD STORAGE TANK |
C22 — SPRINKLER & FIRE | C48 — SHEET METAL |
C23 — PROPERTY MAINTENANCE | C49 — ENVIR SER/HAZ WASTE |
C24 — CARPET INSTALLERS | C50 — SPECIALTY INSTALLERS |
C25 — PAINTING | C51 — UNCLASSIFIED SPECIAL |
C26 — PRESSURE WASHING | C99 — OTHER |
