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| 61% | Quarrying, Asphalt, Readymix, Concrete Products |
| 8% | Industrial Minerals (coal, cement, lime, china clay, gypsum) |
| 3% | Recycling & Landfill |
| 2% | Plant Hire, Specialist Contractor |
| 8% | Technical, Planning Consultancy |
| 2% | Govt Department, Local Authority |
| 9% | Plant, Equipment Supplier |
| 7% | Others |
| 27% | Director, Owner, Partner |
| 12% | General, Regional, Area Manager |
| 21% | Quarry, Site, Works Manager |
| 13% | Other Managers (Project, Maintenance, Contract, H&S, Environmental) |
| 5% | Engineers & Technical Specialists |
| 10% | Sales Managers & Representatives |
| 12% | Lecturers, Training Officers and Librarians |
| 2% | Other (Training Officers, Admin, Plant Inspector, H&S Advisor) |