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???? Subscribe to the channel: https://tiny.pl/wrg9s ???? Instagram: / dom_prawie_myslacy The company that performed the tests for us is GeoDrill Studio: https://www.geodrillstudio.pl/ Very positive and flexible. Could we have noticed that the sand was not right, at an earlier stage? Yes, even in the film you can see (01:07) that a perfectly flat surface does not come out from under the compactor, only partially rolled and cracked clay. This was a signal to change the sand supplier.