Editing Silicon dioxide (section)

===Occupational hazard===
Silica is an occupational hazard for people who do [[Abrasive blasting|sandblasting]] or work with powdered crystalline silica products. Amorphous silica, such as fumed silica, may cause irreversible lung damage in some cases but is not associated with the development of silicosis. Children, asthmatics of any age, those with [[Allergy|allergies]], and the elderly (all of whom have reduced [[Lung volumes|lung capacity]]) can be affected in less time.<ref>{{cite journal|display-authors=3|vauthors=Reuzel PG, Bruijntjes JP, Feron VJ, Woutersen RA|year=1991|title=Subchronic inhalation toxicity of amorphous silica and quartz dust in rats|journal=[[Food and Chemical Toxicology|Food Chem. Toxicol.]]|volume=29|issue=5|pages=341–54|doi=10.1016/0278-6915(91)90205-L|pmid=1648030}}</ref>

Crystalline silica is an [[occupational hazard]] for those working with stone [[countertop]]s because the process of cutting and installing the countertops creates large amounts of airborne silica.<ref name="Hazard">{{cite web|url=https://www.cdc.gov/niosh/docs/2015-106/pdfs/2015-106.pdf |archive-url=https://ghostarchive.org/archive/20221010/https://www.cdc.gov/niosh/docs/2015-106/pdfs/2015-106.pdf |archive-date=2022-10-10 |url-status=live|title=Worker Exposure to Silica during Countertop Manufacturing, Finishing and Installation|date=2015|publisher=[[National Institute for Occupational Safety and Health]] and [[Occupational Safety and Health Administration]]|access-date=26 Feb 2015}}</ref> Crystalline silica used in [[hydraulic fracturing]] presents a health hazard to workers.<ref name=NYT82313/>