A lot of devices and goods these days are created in such way that they are multifunctional. It is proved by the fact that improving percentage of customers demand from many goods to be able to be used for diverse purposes. This is connected, above all, with economical reasons, as for example purchasing a mobile phone that allows us to save money on buying additional camera or GPS device, as they are available in features of improving number of phones.
Mining has become these days something that is very popular. It is connected with the fact that the trends in the sphere of construction industry have changed a little bit and, thus, growing number of end-users are interested in it. It is connected with the fact that due to the drilling process they are provided with an interesting possibility to have some additional space underground that would be used for different purposes