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2008-09-17_REVISION - M1980244 (28)
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2008-09-17_REVISION - M1980244 (28)
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Last modified
6/15/2021 5:52:18 PM
Creation date
9/19/2008 7:43:12 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
REVISION
Doc Date
9/17/2008
Doc Name
Response to Adequacy Review
From
CC&V
To
DRMS
Type & Sequence
AM9
Media Type
D
Archive
No
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6. Diameter and depth of hole; <br />7. Types of explosives used; <br />8. Total weight of explosives used per hole and maximum weight of explosives <br />used per 8-millisecond period: <br />9. Initiation system; <br />10. Type and length of stemming; <br />11. Mats or other protections used; <br />12. Type of delay detonator and delay periods used; <br />13. Number of persons in the blasting crew; and <br />14. Seismographic records as approved in AM-08. <br />Response. <br />CC&V will review and revise the current form being used to document the production blasts <br />at CC&V to incorporate these recommendation. Should the form need to be revised, it will be <br />included forwarded to DRMS. The License number through the BATF for the site naming <br />CC&V as the License holder is: 5-CO-119-33-1B-00477 and is valid until 2011. <br />e) CC&V will conduct pre-blast survey of potentially affected structures not owned <br />or controlled by CC&V that have not previously been surveyed, with survey <br />results on file with DRMS. Pre-blast surveys must be conducted at all structures <br />located within one-half mile of the proposed blasting unless persons in ownership <br />or control deny access to the structures. Written request to conduct pre-blast <br />is surveys must be sent to owners of all structures a minimum of 30-days prior to <br />initiation of blasting within one-half mile. CC&V must provide a plan for DRMS <br />review and approval prior to conducting the surveys. <br />Response: <br />Pre- blast surveys have already been completed for the Main Cresson, and East Cresson. Pre- <br />blast surveys will be provided as a service to those within 2500 feet prior to the development <br />of the North Cresson mine. Pre-blast survey notices will be sent to those owners with copies <br />of the notices forwarded to DBMS. These notices will include a Plan completed by Matheson <br />Mining (or other qualified entity) and approved by DBMS prior to completing the surveys. <br />f) CC&V proposes the installation of at least one additional seismograph, in addition <br />to those already approved under AM-08, for monitoring of potential impacts to <br />structures in Cripple Creek. The Division will require that the location for the new <br />seismograph(s) be established prior to a decision on AM-09, and that the location <br />for one of the seismograph(s) be at the closest structure (to include the <br />underground workings of the Molly Kathleen). <br />Response: <br />Two additional production blast monitoring location near Cripple Creek would be established <br />as part of the MLE Project activities. Once of the monitors would be established in Poverty <br />• Gulch with the cooperation of the owners of Mollie Kathleen facility and the second would be <br />established based on the recommendation of Matheson Mining, at the nearest Casino in <br />Cripple Creek with the cooperation of the Casino owner. This Casino monitor would be very <br />near the Double Eagle Hotel and Casino on the corner of Myers and 5th. <br />1'1
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