because we can collect rare elements and kill them very quickly, some time ago indian arjun khorasan razavi and the chinese in south khorasan and they also have the same name for the garbage . the mining industry in the world no longer considers waste to be superfluous it doesn't work with a pump. it is possible that in an ore of pink calicea you need, like iron, you extract it. what remains may be more valuable than the original material. it contains gold, silver, good work, green color, and other things . they are valuable, there are countries. that this issue is ahead means coming to work on these elements , a bit more complex parts technology than the basic technology of separation that we have mines and mineral industries of batteries, which is almost lacking in 60 elements, it is very important that according to estimates , minerals in the country iran has announced that so far with processing they have been neglected by the heavy plans of the country, and we have an equivalent that they have been producing for years and with efforts, each of them with several efforts, in my opinion,