Both of these materials are the real hard split, this is due to the existence of common ground site (same place) which is generally located at the bend of the River-meanders Liliba. In the area of a pool of both types of these materials can be found dikelokan-bend in the River near TP, TP-7, TP-2 as well as on the bend near the TP-11.
To get an estimate of the approximate volume of the backup of each of the material by using an alternative method, namely by way of comparison.