The problem with excavated earth and rocks is, from an economic, regulatory, and an environmental perspective. However, there is a solution and is within reach.
Although NASA's Ingenuity drone helicopter landed on Mars, the earth continues to be the only planet we can inhabit. The soil we live on is a non-renewable resource and needs to be preserved by any means necessary.
When it comes to managing excavated soil, the first form of safeguarding the material is reusing the soil, which leaves the environmental quality unchanged. The focal point is that excavated soil is not waste needing to be thrown away, but becomes a valuable resource for everyone involved. Companies and operators aim to recover a large amount of soil to use it again on the job site or in neighboring areas.
One of the necessities is to separate the different types of extracted material in to reuse the soil. With the right equipment, the solution is within reach.
One case happens in Quillagua, a small Chilean town in the Antofagasta province; National Geographic considers this town the driest place on the entire planet. Over the past 40 years, there are only been 0.2 millimeters of rainfall. On this barren land, they used an MB-S18 screening bucket to select sand and reuse it again to cover the solar panels' cables: finally, the town's citizens can communicate with the rest of the world. Due to the location's particularities and the operations, the case has gained a plenty of media coverage.