Environmental asbestos pollution related to use of quarried serpentine rock

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Science  17 Jun 1977:
Vol. 196, Issue 4296, pp. 1319-1322
DOI: 10.1126/science.867030


Crushed serpentinite quarried in Montgomery County, Maryland, has been extensively used for paving roads and other surfaces. The mineral assemblage includes antigorite or lizardite as well as chrysotile and tremolite. Air samples taken in the vicinity of serpentine-paved roads show that chrysotile concentrations are about 10(3) times greater than those typically found in urban ambient air in the United States.