| 1 | His boots were dabbled with mud. | |
| 2 | "It' s quite possible fecal sludge can be incorporated in cement plants with no changes or additions to existing infrastructure," she says. | |
| 3 | Take a look over my shoulder here. That red sludge spilled out of a reservoir at an aluminum plant on Monday. | |
| 4 | The facility recently recorded finding 1,890 grammes of gold per tonne of ash from incinerated sludge. | |
| 5 | The Beijing Victex Environmental Science and Technology Development Company, for example, uses the torches to destroy sludge from Chinese oil refineries. |
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