Product stewardship in wollastonite production

Autor:	Ron Niebo, Salvatore LaRosa, K.A. Allison, Brad Johnston, E. E. McConnell, L. Daniel Maxim
Rok vydání:	2008
Předmět:	Background information Waste management In vitro dissolution Health Toxicology and Mutagenesis Silicates Workplace air Mineralogy engineering.material Calcium Compounds Toxicology Talc Product stewardship Wollastonite Mining Tremolite Asbestos Air Pollution Indoor Occupational Exposure medicine engineering Environmental science Tremolite medicine.drug Environmental Monitoring
Zdroj:	Inhalation toxicology. 20(14)
ISSN:	1091-7691
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30e24805fba8128474903c78bfe8f445 https://pubmed.ncbi.nlm.nih.gov/18855155 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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