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Blasting injuries in surface mining with emphasis on flyrock and blast area security.

Authors
Bajpayee-TS; Rehak-TR; Mowrey-GL; Ingram-DK
Source
J Saf Res 2004 Jan; 35(1):47-57
NIOSHTIC No.
20024349
Abstract
Blasting is a hazardous component of surface mining. Serious injuries and fatalities result from improper judgment or practice during rock blasting. This paper describes several fatal injury case studies, analyzes causative factors, and emphasizes preventive measures. This study examines publications by the Mine Safety and Health Administration (MSHA), the U.S. Geological Survey, and other authors. The main source of information was MSHA's injury-related publications. During the 21-year period from 1978 to 1998, the mean yearly explosive-related injuries (fatal and nonfatal) for surface coal mines was 8.86 (95% CI: 6.38-11.33), and for surface metal/nonmetal mines 10.76 (95% CI: 8.39-13.14). Flyrock and lack of blast area security accounted for 68.2% of these injuries. This paper reviews several case studies of fatal injuries. Case studies indicate that the causative factors for fatal injuries are mainly personal and task-related and to some extent environmental. A reduction in the annual injuries in surface coal mines was seen during the 10-year period of 1989-1998 (5.80 (95% CI: 2.71-8.89)) compared to the previous 10-year period of 1979-1988 (10.90 (95% CI: 7.77-14.14)). However, such reduction was not noticed in the metal/nonmetal sector (9.30 (95% CI: 6.84-11.76) for the period 1989-1998 compared with 11.00 (95% CI: 7.11-14.89) for the period 1979-1988). A multifaceted injury prevention approach consisting of behavioral/educational, administrative/regulatory, and engineering interventions merits consideration. The mining community, especially blasters, will find useful information on causative factors and preventive measures to mitigate injuries due to flyrock and lack of blast area security in surface blasting. Discussion of case studies during safety meetings will help to mitigate fatal injuries and derive important payoffs in terms of lower risks and costs of injuries.
Keywords
Blasting; Mining; Explosives; Injuries; Flyrock; Mining-industry; Surface-mining; Traumatic-injuries; Injury-prevention; Accident-prevention
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
JSFRAV
Publication Date
20040101
Document Type
Journal Article
Email Address
TBajpayee@cdc.gov
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Issue of Publication
1
ISSN
0022-4375
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
Journal of Safety Research
State
PA
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