| Hemo Logistics Inc | Oldcastle, Ontario | 95 | 110 |
| Fogz Logistics Ltd | Oldcastle, Ontario | 79 | 74 |
| Gorski Bulk Transport Inc | Oldcastle, Ontario | 43 | 43 |
| Kmj Industrial Contractors Inc | Oldcastle, Ontario | 39 | 20 |
| Mach10 Transport Inc | Oldcastle, Ontario | 27 | 27 |
| Mont'S On-Time Express Inc | Oldcastle, Ontario | 7 | 7 |
| Integrity Tool And Mold | Oldcastle, Ontario | 6 | 5 |
| Briadco Tool And Mould Inc | Oldcastle, Ontario | 5 | 8 |
| 2490683 Ontario Inc | Oldcastle, Ontario | 4 | 4 |
| Superior Tool & Mold Inc | Oldcastle, Ontario | 4 | 1 |
| Crest Mold Technology Inc | Oldcastle, Ontario | 3 | 4 |
| P Klassen Custom Fab Inc | Oldcastle, Ontario | 3 | 4 |
| Unique Tool & Gauge Inc | Oldcastle, Ontario | 3 | 2 |
| 2268775 Ontario Limited | Oldcastle, Ontario | 2 | 4 |
| Aalbers Tool & Mold Inc | Oldcastle, Ontario | 2 | 2 |
| Absolute Tool Technologies Inc | Oldcastle, Ontario | 2 | 2 |
| Arlen Tool Co Ltd | Oldcastle, Ontario | 2 | 1 |
| A V Gauge & Fixture Inc | Oldcastle, Ontario | 2 | 3 |
| B & B Tool & Mould Limited | Oldcastle, Ontario | 2 | 2 |
| Bear'S Performance Inc | Oldcastle, Ontario | 2 | 1 |
| Dixon Tool Company Limited | Oldcastle, Ontario | 2 | 1 |
| Electratech Manufacturing Inc | Oldcastle, Ontario | 2 | 1 |
| Nova Tool & Mold Inc | Oldcastle, Ontario | 2 | 1 |
| Prominent Fixture & Gauge Limited | Oldcastle, Ontario | 2 | 1 |
| React Tool And Mold Inc | Oldcastle, Ontario | 2 | 1 |
| Unique Tool & Gauge Inc | Oldcastle, Ontario | 2 | 2 |
| Briadco Fixture Gauge Inc | Oldcastle, Ontario | 1 | 1 |
| Croatia Machine Tool Of Canada Ltd | Oldcastle, Ontario | 1 | 1 |
| Cst Studio Ltd | Oldcastle, Ontario | 1 | 1 |
| Dc Automotive Tooling Inc | Oldcastle, Ontario | 1 | 1 |
| Glider Guard Tool & Die Inc | Oldcastle, Ontario | 1 | 1 |
| Holwin Tooling Systems Inc | Oldcastle, Ontario | 1 | 2 |
| Id-Od Ltd | Oldcastle, Ontario | 1 | 1 |
| Sequel Tool And Mold Inc | Oldcastle, Ontario | 1 | 1 |
| Standard Tool & Mold Inc | Oldcastle, Ontario | 1 | 1 |
| Windsor Feedscrews Inc | Oldcastle, Ontario | 1 | 1 |
| Gorski Bulk Transport Inc | Oldcastle, Ontario | 0 | — |