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ENFORCE32724
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ENFORCE32724
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Last modified
8/24/2016 7:43:34 PM
Creation date
11/21/2007 1:28:56 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Enforcement
Doc Date
10/22/1992
Doc Name
COLOWYO COAL MINE C-81-019 NOV C-92-30 FAILURE TO PROVIDE BLASTING SKETCHES
From
DMG
To
DAVID BERRY
Violation No.
CV1992030
Media Type
D
Archive
No
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• <br />Revised April, 199? <br />• ~~ <br />TABLE 5 <br />Blasting Parameters - Overburden <br />(Typical) <br />Explosive Material ANFO or Water Proof Explosive <br />Hole Diameter 9-7/8 inch <br />Hole Stemming 14 feet <br />Powder Column 17 feet <br />Powder Factor 0.80 lbs./BCY <br />Drilling Pattern 25 ft. x 25 ft. <br />MS Delays 17 MS Delay <br />NOTE: Colowyo uses a variety of equipment (draglines, <br />truck/shovels, etc.) for overburden removal. The <br />above parameters represent an example of the <br />program used in blasting overburden. <br />1 <br />14' STEMMING <br />1 <br />17' ANFO <br />PRItrER <br />TY/'/CAL A?WQE.~ Q7LUMN <br />OPEN FACE <br />POINT OF INITIATION <br />17 MS DELA7 <br />TYP1C11L DELAY PATTERN <br />2.0~-^0 <br />
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