SAND AND GRAVEL MINING IN OKLOMA WATERWAYS .
May 20, 2010· This process normally involves excavating or dredging the material with a buckettype loader such as a backhoe or tracked excavator. The excavated material is then placed directly into an enclosed truck bed and hauled to an approved upland processing or storage site. E2. Maintain a buffer of undisturbed sand or gravel riverward from the edge of the