1999-01-19_REVISION - M1977326 ‎(5)‎

• Permit No: M1977326
• IBM Index Class Name: Revision
• Doc Date: 1/19/1999
• Doc Name: SILOAM CLAY MINE PN M-77-326 TR
• From: ROBINSON BRICK CO
• To: DMG
• Type & Sequence: TR1
• Media Type: D
• Archive: No

TABLE OF CONTENTS
NO. PAGE
SUMMARY OF GENERAL FINDINGS AND CONCLUSIONS.....................................................S-1
1.0 INTRODUCTION.................................................................................................................................1
2.0 BLASTING IMPACTS ANALYSES.....................................................................................................3
2.1 Impacts of Blast-Induced Ground Shaking And Fracturing.................................................3
2.1.1 Review of Blasting Vibration Phenomena...............................................................4
2.1.2 Potential for Damage to Structures from Blast-Induced Ground Shaking.............6
2.1.3 Potential for Damage to Buried Utilities................................................................10
2.1.4 Potential for Blast Damage to Area Water Wells..................................................12
2.2 Potential for Damage to Overhead Powerlines and Nearby Roads.................................13
2.3 Blast Noise Impacts and Control ........................................................................................14
2.3.1 Blast Noise (Airblast)Monitoring Scales...............................................................14
2.3.2 Air Overpressure (Noise) Limitations....................................................................15
2.3.3 Controlling Air Overpressure.................................................................................16
3.0 GENERAL BLASTING CONCERNS OF PROJECT NEIGHBORS,...............................................18
3.1 Concerns of Property Owners............................................................................................18
3.2 Common Blasting Questions and Answers........................................................................19
4.0 REGULATIONS GOVERNING BLASTING AND EXPLOSIVE USE..............................................21
4.1 Mine Safety and Health Administration (MSHA)................................................................21
4.2 Colorado State Division of Labor........................................................................................21
4.3 Bureau of Alcohol Tobacco and Firearms (BATF):............................................................21
4.4 Department of Transportation (DOT)..................................................................................22
5.0 REFERENCES..................................................................................................................................23
6.0 QUALIFICATIONS OF AUTHOR .....................................................................................................24
Review of Blasting at Robinson Brick Company's Siloam Clay Mine GEOTEK& Associates, Inc. January 99