| Number | Description | <click to enlarge> | |
| K1 | Weatherill Hydraulic Shovel |  |
|
| K2 | Muir-Hill Dumper |  |
|
| K3 | Caterpilar Bulldozer |  |
|
| K4 | McCormick International Tractor |  |
|
| K5 | Foden Dumper Truck |  |
 |
| K6 | Allis-Chalmers Motor Scraper |  |
|
| K7 | Curtiss-Wright Rear Dumper |  |
|