| 1. | The gravel mines east of Arbor Lakes are still active.
|
| 2. | Dierscheid was until the 1950s characterized by agriculture, forestry and gravel mining.
|
| 3. | Sand and gravel mining occur in the river system and destabilize the substrate.
|
| 4. | It is depleted by dredging and gravel mining.
|
| 5. | For example, gravel mining along the creek.
|
| 6. | A small gravel mine opened in 1963 and provided some jobs for the residents.
|
| 7. | Today, the river is used commercially by tourboats and sand and gravel mining barges.
|
| 8. | In May 2008 ended the gravel mining and began the partial attenuation of the lakes.
|
| 9. | Farming, gravel mining, and logging continue on the mountain to the present day.
|
| 10. | Gravel mining, herbicides, and off-road vehicles are threats in some areas.
|
मोबाइल