Wylie, Ann G.Virta, Robert L.Shedd, Kim B.Snyder, Janet G.Data on size and shape characteristics of airborne amphibole asbestos and amphibole cleavage fragments obtained from air-monitoring filters at three mine sites and two industrial sites: (1) Homestake Gold Mine, Lead, South Dakota, (2) Shadwell Quarry, Charlottesville Stone Quarry, Virginia, (3) Peter Mitchell Iron Ore Mine, Mesabi Range, Minnesota, (4) a shipyard, and (5) an electrical company. Data were collected in ca. 1977-1979. Most data values were obtained with Scanning Electron Microscopy (SEM) with Energy-Dispersive X-Ray Analysis (EDXA) capability. See documentation file for full study abstract, an explanation of the content of the data files, and references to associated publications. The xlsx files may contain multiple studies on separate sheets. Please see the documentation file for an explanation of the various studies. The csv versions contain the same data as the corresponding xlsx file, but their structure has been modified to make well-formed csv. Where there are multiple studies for a particular site, the studies have been divided into separate csv files. The csv files are provided as a software-independent alternative to the xlsx format.enActinoliteAmositeGruneriteAsbestosAmphibole groupMineral industries - health aspectsIndustrial hygieneGranulometryShipbuilding industry - health aspectsElectric power production - health aspectsDataset