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Monitoring and removal of CO in blasting operations.

Authors
Harris-ML; Mainiero-RJ
Source
Saf Sci 2008 Dec; 46(10):1393-1405
NIOSHTIC No.
20034672
Abstract
Toxic fumes produced by detonating explosives in surface mining and construction operations pose potential hazards to workers and the public. Blasting operations produce both toxic and nontoxic gaseous products; the toxic products are mainly carbon monoxide (CO) and the oxides of nitrogen (NOx). Since 1988, there have been 17 documented incidents in the United States and Canada in which carbon monoxide (CO) is suspected to have migrated through ground strata into occupied enclosed spaces as a result of proximate trench blasting or surface mine blasting. These incidents resulted in 39 suspected or medically verified carbon monoxide poisonings as well as one fatality. At worst people may be fatally poisoned and the least to be expected is increased public objections to blasting. Local and state agencies could demand a cessation of the blasting requiring more expensive mechanical means to break the rock. This paper discusses the most feasible means of preventing CO migration, mitigating CO that has migrated, and detecting CO in an underground enclosed space and may help reduce the exposure of unsuspecting area residents to carbon monoxide and help prevent the implementation of unnecessary regulations and limitations on blasting. Single-hole shots and small-scale multiple-hole blasts were performed that indicate promising means of prevention and mitigation.
Keywords
Work-environment; Safety-measures; Safety-practices; Occupational-hazards; Workplace-studies; Blasting-agents; Explosions; Explosive-atmospheres; Explosive-gases; Explosive-hazards; Exposure-assessment; Exposure-methods; Gases; Toxic-gases; Work-areas; Mine-gases; Miners; Mining-industry; Author Keywords: Explosives; Blasting; Carbon monoxide; Fumes; CO poisoning
Contact
Marcia L. Harris, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 626 Cochrans Mill Road, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
SSCIEO
CAS No.
630-08-0
Publication Date
20081201
Document Type
Journal Article
Email Address
mharris@cdc.gov
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Issue of Publication
10
ISSN
0925-7535
NIOSH Division
PRL
Source Name
Safety Science
State
PA
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