| 21. | The open pit might reach wide and several thousand feet deep.
|
| 22. | Gas flares and raging fires in open pits foul the air.
|
| 23. | Open pit and underground ore are processed at the Chirano plant.
|
| 24. | The mine was reopened as an open pit in 1987 by Westmin Resources.
|
| 25. | Shared latrines or open pit latrines are excluded from this definition.
|
| 26. | The Morenci open pit, in southeast Arizona, is among the world's largest holes.
|
| 27. | Scores of open pit ovens for firing the pottery can also be discerned.
|
| 28. | The plaintiffs have said that Texaco left behind 627 open pits.
|
| 29. | Coal production in 2001 at the Centralia Mine came from 4 open pits.
|
| 30. | As early as 1840, chalk was quarried here in open pits.
|
