31 00 00 Earthwork Industrial Contractor 31 22 00 Grading 02 41 00 Demolition Building Contractor 31 05 16 Aggregates for Earthwork 31 20 00 Earth Moving Utility Contractor 02 00 00 Existing Conditions 31 10 00 Site Clearing 31 23 00 Excavation and Fill Highway Contractor 31 25 00 Erosion and Sedimentation Controls
General contractor, highway and industrial.
General Contractor