| 1 | Various factors are analyzed and described here which affect the digging capacity of electric dipper; | |
| 2 | That main excavation and loading equipment at present in domestic large-scale open-pit is the Electric shovel. | |
| 3 | Specifically formulated for use in draglines, shovels, and excavators. | |
| 4 | The repairing wearing method of cover and shovel of hoisting drum of WK-4 type shovel is introduced. | |
| 5 | This article is intended for brief introduction of heavy-duty electric shovels and the advantages, as the well-proven standard for high-production, low cost (HPLC) mining applications. |
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