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Drilling and Blasting duration 3 minutes 38 seconds Drilling and Blasting Drilling and Blasting	Drilling and Blasting rock blast construction nfo feet drilling row dynamite explosives bench bit drill boreholes drills blasting result delay water oil detonator From Thomas Hales 0 likes 4 plays 0
CMT 4150 Spring 2021 Chapter 11 Lecture duration 54 minutes 13 seconds CMT 4150 Spring 2021 Chapter 11 Lecture CMT 4150 Spring 2021 Chapter 11 Lecture	CMT 4150 Spring 2021 Chapter 11 Lecture feet hole drill minutes bit hour depth drilling minute rate step foot holes table production penetration drills steps rock miles From Thomas Hales 0 likes 28 plays 0
CMT 4150 VTL Spring 2021 32966 duration 56 minutes 41 seconds CMT 4150 VTL Spring 2021 32966 CMT 4150 VTL Spring 2021 32966	CMT 4150 VTL Spring 2021 32966 Zoom Recording ID: 96033878422 UUID: SgSmiEKURBGnV1Hex+lBdQ== Meeting Time: 2021-03-03T02:25:00Z feet hole minutes drill bit hour depth drilling step minute rate holes foot table production penetration drills steps rock miles From Thomas Hales 0 likes 2 plays 0