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Drummond Company, Inc.
| Drummond Company, Inc. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100171360 | METHOD FOR OPEN PIT BENCH MINING - A bench mining method, particularly useful for open pit bench mining, which employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden. | 07-08-2010 |