2018-03-09_PERMIT FILE - M2017049 ‎(27)‎

• Permit No: M2017049
• IBM Index Class Name: PERMIT FILE
• Doc Date: 3/9/2018
• Doc Name Note: PART 2 OF 3
• Doc Name: Adequacy Review Response
• From: Transit Mix Concrete Co.
• To: DRMS
• Permit Index Doc Type: Application Materials
• Email Name: TC1
• Email Name: ERR
• Email Name: ECS
• Email Name: WHE
• Email Name: AME
• Email Name: PSH
• Media Type: D
• Archive: No

'a o Transit Mix Concrete Co.
444 E.Costilla Street,Colorado Springs,CO 80903 Office: [phone] Fax: [phone]
The initial Blasting Plan is included as an appendix in the published mine permit and Hitch Rack
Ranch Mine Operations Plan. If changes to the Blasting Plan are needed,the revised Blasting
Plan will be delivered to the locations listed above.
Blasting Procedure:
Licensed Blaster- Blasting Sub-Contractor
Hitch Rack Ranch Quarry will use a U.S. Bureau of Alcohol, Tobacco, Firearms, and
Explosives (ATF) licensed third party blasting contractor(Type 20-Manufacturer of
Explosives), who also holds Colorado Explosives Permit Type 2 (Manufacturer, Dealer,
Purchaser, Construction, Quarry, Transportation) and Type III (Storage) from the
Colorado Department of Labor and Employment, Division of Oil and Public Safety
(DOPS), as well as a Hazardous Materials Transportation Permit from the Public Utilities
Commission of the State of Colorado to conduct all blasting activities. The third party
contractor employs Blasters holding Type I Explosive Permits (possess and control the
use of explosives) also issued by Colorado Department of Labor and Employment,
DOPS. All third party contractor employees that will work on site will meet MSHA Part
48 training requirements. Transit Mix Concrete Co. will evaluate qualified blasting sub-
contractors and will contract with one or more of these qualified vendors to support
development and production of the quarry.
Blast Pattern Design and Drilling
Personnel at Hitch Rack Ranch Quarry will clear and prepare each area to be drilled and
blasted according to the established quarry development sequence. The quarry manager,
in consultation with the qualified blasting contractor, will design appropriate drill patterns
to ensure safe and efficient production in the designated areas of the quarry. These
designs include the hole diameter, burden and spacing, pattern type, hole depth, number
of holes, explosive type and densities, initiation type, initiation sequencing pattern,
amount of stemming and type, etc.
The typical blast attern designs are:
inch ft ft . , pztwn.
5 10 14 Staggered 30-40 8 3
5 12 12 Square 30-40 10 3
4.5 9 13 Staggered 25-30 8 3
4.5 11 11 Square 25-30 9 3
3.5 8 8 Square 20-25 7 2
3.5 7 10 Staggered 20-25 6 2
3.5 7 7 Square 10-15 7 2
3.5 6 8 Staggered 10-15 5-6 2
3.5 NA 3.5 Presplit 10-40 3.5 0
4