What is the grade?

The coarse material that remains after the ore processing is a stamp sand. Traditionally, it was considered a waste and discarded. In later years, as the methods of improvement of material processing have improved, several projects have started that regenerated deposits of stamps for new uses.

During the first years of metal production, it was usually stored near the stamp. Most of the facilities were built on the coast of rivers and lakes to use water for steam energy. Sometimes so much sand would be thrown into the water that it would create new bodies of soil. It is located in the region called Copper County. The stamps created so much material that the sand was used for other purposes, such as coverage of ice roads instead of road salt. This is, because some of the trace heavy metals in the sand may contain dangerous elements such as Arsen. The level of risk depends on the concentration of metals and content. Not all deposits are necessarily dangerous.

Nevertheless, many landfills have been contained to clean the stamp. Once the sand is removed, it is usually replaced by pure dirt to use the soil for other purposes. If this is not the case, the inhabitants of businesses and residences built above the deposits are likely to be at risk.

Many pages that want to further use this material have also received stamps regeneration. This has become increasingly common because new methods for further processing of sand have been developed. For example, sand from Michigan was used to create roof shingles. This is a particularly useful application because copper fights the growth of moss and the key element of renewed sand.

The use of sand from old bearings has several advantages. In addition to being a source of material for other purposes because it is recycled, it requires less production. The use of sand reduces the need to draw from other natural sources. It is also beneficial for communities in which bearings are placed because piles of sandThey tend to be unsightly.

The stamp extracts valuable metal elements from the rocks by their first punch. That's what creates a stamp. The rest of the material is treated physically or mechanically to make the metal extracted.