A New Generation of Drilling at the Minntac Mine
- Organization:
- International Society of Explosives Engineers
- Pages:
- 16
- File Size:
- 440 KB
- Publication Date:
- Jan 1, 1998
Abstract
The Minntac Mine drills and blasts approximately 75 million long tons of taconite per year. This requires drilling one million feet of 1 6-inch diameter holes. We are in the process of replacing our old generation rotary blasthole drills (Gardner-Denver 120's and Bucyrus-Erie 61R's) with new generation rotary blasthole drills (Bucyrus-Erie 59R's and P&H 120A's).
Citation
APA: (1998) A New Generation of Drilling at the Minntac Mine
MLA: A New Generation of Drilling at the Minntac Mine. International Society of Explosives Engineers, 1998.