Document Detail

Product stewardship in wollastonite production.
MedLine Citation:
PMID:  18855155     Owner:  NLM     Status:  MEDLINE    
In July 2002, NYCO Minerals, Inc., discovered a heretofore unknown contaminant in its wollastonite ore. The contaminant was first believed to be tremolite asbestos. Immediate efforts were made to eliminate this material. Additional studies were initiated to fully characterize the contaminant and its distribution in the ore body. Subsequent study by NYCO and their consultants led to the identification of the contaminant as a transition material (TM) intermediate between tremolite and talc. In vitro dissolution rate measurements indicated that the TM dissolved much more rapidly than tremolite asbestos. This article provides background information on wollastonite mineralogy and NYCO's product stewardship program (PSP). At present, NYCO Minerals uses selective mining to control the trace levels of TM in the ore and finished product verified by periodic monitoring of workplace air and finished product.
L Daniel Maxim; Ron Niebo; Salvatore Larosa; Brad Johnston; Kimberly Allison; E E McConnell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Inhalation toxicology     Volume:  20     ISSN:  1091-7691     ISO Abbreviation:  Inhal Toxicol     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-11-12     Completed Date:  2009-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8910739     Medline TA:  Inhal Toxicol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1199-214     Citation Subset:  IM    
Everest Consulting Associates, Cranbury, New Jersey, USA.
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MeSH Terms
Air Pollution, Indoor
Calcium Compounds / chemistry*
Environmental Monitoring / methods
Occupational Exposure
Silicates / chemistry*
Reg. No./Substance:
0/Calcium Compounds; 0/Silicates; 1344-95-2/calcium silicate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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