??? ??? ????? ?? ??? ??? ??? ????? ?? ??? ????? ??? ????? ?? ??? ?????? ????????? ?? ????? ?????? ?????????? ???? ??????? ?????? ??????? ?????? ????????. ????? ????? ?? ???? ??? ??? ????? ?? ??? ???? ???? ?????? ?? ???????? ????? ?????? ???? ?? ??????? ?? ???????. ??? ?????? ???? ?? ????? ????? ??? ????? ?????? ??? ??? ??? ?????? ??????? ??? ????
Types of stone
????? ????? ??????? ????? ????? ??????? ?????? ?? ???? ????? ????? ??????? ???????? ?? ????? ?????? ??????? ????? ????? ??????? ??????? ?????? ?????? ?????? ????? ????? ?????? ????? ??? ????? ??????? ????? ????? ??????? ?? ??? ??????????? ????????? ??????? ???? ?? ????? ???? ???? ????? ??? ??? ??? ??????? ????????? ?? ?????? ?? ?????? ??????
contractor
????? ????? ??? ?????? ?? ??? ??????? ?? ??? ??? ????? ???????? ??? ????? ??????? ?? ????? ?????? ???? ??????? ????? ?? ????? ??? ????????? ????? ??????? ???? ??? ?????? ??????? ??????? ????????? ????? ???? ????? ?????? ??????? ?????? ???? ?????? ????? ????????. ???? ??????? ??? ????? ????? ????? ?? ????? ??? ??????? ???? ????? ?? ????? ??? ??????
Interfaces
?????? ??? ????? ???? ??? ????? ???? ?? ????? ????? ??????? ?????? ??? ??? ?????? ??? ????? ?????? ??? ???? ??? ??? ??? ??????? ??? ?????? ????? ??????? ??? ??? ????? ????? ?????? ???????? ????? ????? ??????? ?????? ?? ???? ????? ??? ?????? ??????? ?????? ????? ?? ????? ??????? ?????? ??? ???? ?????? ???? ????? ????. ??? ????? ???? ?? ????? ??
basalt
?????? ??? ????? ???? ?????? ??? ????? ?? ?????? ?????? ?? ??????? ???? ?? ????? ??? ?????? ??? ??????? ?? ?????? ????????? ???????? ??? ??????? ????? ??? ???? ?? ???? ???????? ???? ???? ????? ?????? ????? ??? ??????? ????? ???? ????? ????????? ??? ???? ?????? ?????? ??????? ??????? ?????? ??????? ???????? ?? ?????? ?????????? ???? ??????? ?? ????