Perco Rock Company
- Other Heavy and Civil Engineering Construction - 237990
- Construction Sand and Gravel Mining - 212321
- Highway, Street, and Bridge Construction - 237310
- Other Support Activities for Road Transportation - 488490
- Poured Concrete Foundation and Structure Contractors - 238110
- Site Preparation Contractors - 238910
- Water and Sewer Line and Related Structures Construction - 237110