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??? ???????? ????? ?? ??? ?????? ?. ??? ??? ???? 1933. ???, ??? ????? ?????? ???????, ??? ??? ???? ??????? ?????? ?? ??? ????? ??? ??? ??????? ???? 1909. ?? ???, ??? ??????? ?????? ????, ?????? ??????? ?? ????? ??? ???????.
??? ?????? ??? ????? Hughes Tool ???? ???? ?? ??????, ?????? ?? ??? ????? ?? ?-tricone bit. ???? ??? ?? ??? ????? ??????? ????????, ??? ????? ???????? ?? ?????? ?????? ?? ??? ??? ???? ?????? ??? ?? ??? ????. ?????? ??? ?? ????? ???? ??? ????? ??????? ??????? ????? ????? ?????.
????? ?? 1933 ????????
???? 1933, ???? Hughes Tool ????? ?? ????? ?? ??? ???????, ??????? ?? ????? ???????? ??????? ???? ??????. ????? ???? ????? ????? ???? ???? ????? ????, ??? ??????? ?? ?????? ????? ?? ?????? ??? ????.
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??? ???? ?-Tricone Bit
????? ????? ???????
??? ??? ?????? ??????, ???? ??? ?? ??? ???????, ???? ????? ??????? ?? ??? ??????? ???? ???? ??????? ???????:
????? ????? ????? ????: ?????? ??? ????? ??????? ????? ?? ???? ????? ???? ????? ????? ????.
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???? ??? ????? ??????? ?? ????? ?????????, ??? ??? ??? ????? ????? ????? ????????:
????? ????????? ?????????:
????? ????????? ?? ??????? ????? (TCI):
????? ??????? ???? ????, ???? ????? ?????.
????? ??????? ??????? ?????, ???????? ?????? ??? ???? ??????? ???? ?????.
???????? ????? ??? ??????? ??????? ????? ?? ??? ??????? ?????? ????? ??????? ??????????? ????????? ????.
????????? ?? ?????????? ?-Tricone Bit
??????? ??????? ????????
??? ??????, ??? ??????? ??? ??????? ????. ????? ??????? ????? ????? ??????, ?? ?????? ???????? ??????? ???????? ????? ???? ???? ?????? ??????? ????? ??? ???? ?? ???????. ??? ??????? ??????? ????? ?????? ?????? ??????? ??????? ????? ????? ????????.
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?????????
????? ? ??? ?????? ??? Howard R. Hughes Sr. ???? 1933 ???? ????? ??????????? ??????. ?? ?????? ??? ????? ???????, ??????? ??????? ?????? ???????? ???, ??? ??? ????? ??????? ???????, ????? ?? ?????? ????? ???, ??, ????? ??????? ??? ???.
????? ?????, ??????? ?????? ??????? ??????? ????? ??? ???? ?? ??????? ????????? ?? ??? ???????, ?? ?????? ?? ?????????? ??? ??????? ????? ????????. ????, ????? ??? ShengDe ??????? ???? ?????? ?????????? ?????? ??????, ??????? ??????? ?????? ??????? ?????? ???????.
??? ???? ??????? ?????, ??? ??????? ???? ??? ??????? ??????, ????? ?? ???? ?? ?????? ?????? ????? ?? ??????? ??????????? ????? ?????.
