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Walk-through survey report: control technology for mine assay laboratories at Cone Geochemical Inc., Lakewood, Colorado, report no. CT-198-12a.

Authors
Hall-RM; Sheehy-JW
Source
NIOSH 1993 Jun; :1-12
Link
NIOSHTIC No.
00214633
Abstract
A walk through survey was conducted to identify potentially effective control systems in place at Cone Geochemical Inc., Lakewood, Colorado, a commercial geochemical and assay laboratory analyzing samples from various exploration and development projects. Potential exposures for workers at this facility included a variety of chemical agents such as lead (7439921), arsenic (7440382), mercury (7439976), and respirable crystalline silica (14808607). The sample preparation area, particularly during litharge mixing, and the fire assay area were the two places where exposures were most likely to occur. Local exhaust ventilation and partial enclosures in the sample prep and litharge mixing areas were used to help reduce exposures. Local exhaust ventilation was employed and HEPA half mask respirators were worn at specific times in the fire assay operation. All the measurements taken indicated a well operating local exhaust ventilation system was in place at this location. The authors conclude that this site has effective control measures in place and would be acceptable for an in depth evaluation.
Keywords
NIOSH-Author; NIOSH-Survey; Field-Study; CT-198-12a; Region-8; Control-technology; Ventilation-systems; Personal-protective-equipment; Dust-exposure; Airborne-dusts; Heavy-metals; Fire-assays
CAS No.
7439-92-1; 7440-38-2; 7439-97-6; 14808-60-7
Publication Date
19930601
Document Type
Control Technology; Field Studies
Fiscal Year
1993
NTIS Accession No.
PB93-217362
NTIS Price
A03
Identifying No.
CT-198-12a
NIOSH Division
DPSE
Priority Area
Control-technology
Source Name
National Institute for Occupational Safety and Health
State
CO; OH
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