| 11. | Normally, underground mining is between five and 10 times more expensive than open cut mining.
|
| 12. | The Tarrawonga open cut mine commenced production in 2006.
|
| 13. | Eventually the open cut mines won out and Black Flag was drastically de-stocked in 1989.
|
| 14. | Exploratory boring started in 1941 and plans were made to develop the first open cut mine.
|
| 15. | The Canyon ( formerly Whitehaven ) open cut mine is located 15 km east of Boggabri.
|
| 16. | In 1984, 13 underground and eight open cut mines were in operation in the Ipswich region.
|
| 17. | In 1987 Carpentaria Gold Ltd opened a new open cut mine using modern heap leaching processes.
|
| 18. | Its assets include the plant's adjacent brown coal open cut mine and some 30 years of reserves.
|
| 19. | The typical nickel laterite mine often operates as either an open cut mine or a strip mine.
|
| 20. | It is an open cut mine producing a thermal coal that is low in nitrogen and sulphur.
|
