Deviation control with the "drilling director" in DTH drilling : economic and technical benefits in mining

Kai Nielsen Kai Nielsen, Thorvald Wetlesen, Arne Myrvang
Bok · Språk ikke angitt · 1988

Utgitt	[S.l.] : [s.n.] , [1988?]
Omfang	13 bl. : ill.
Opplysninger	Bidrag til: IFAC Workshop on Advances in Automation of Underground Hard Rock Mining (1 : 1988 : Montréal, Québec).