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In-depth study report: control technology for crystalline silica exposures in construction: wet abrasive blasting at the Nokia Building construction site, Irving, Texas, report no. CT-247-11.

Authors
Heitbrink-WA
Source
NIOSH 1999 Dec; :1-21
NIOSHTIC No.
20000627
Abstract
Worker exposure to respirable crystalline silica was monitored during a wet abrasive blasting on the exterior walls of a parking garage. The abrasive blasting was done to remove 1/8 to 1/4 inch of concrete in order to exposure the underlying aggregate. The abrasive was wet sand that contained 80 percent dry sand and 20 percent water. The geometric mean respirable quartz concentration was 0.2 mg/m3 for workers conducting abrasive blasting and 0.06 mg/m3 for helpers. When the workers were performing abrasive blasting in areas which apparently had reduced natural ventilation, dust exposures appeared to increase.
Keywords
Region-6; Dust-exposure; Abrasive-blasting; Respirable-dust; Respirators; Dust-control; Dust-control-equipment; Silica-dusts; Aerosols
CAS No.
14808-60-7
Publication Date
19991201
Document Type
Field Studies; Control Technology
Fiscal Year
2000
NTIS Accession No.
PB2000-100633
NTIS Price
A04
Identifying No.
CT-247-11
NIOSH Division
DPSE
SIC Code
1771
Source Name
National Institute for Occupational Safety and Health
State
OH; TX
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