Research Article
An Evaluation of Potential Occupational Exposure to Asbestiform Amphiboles near a Former Vermiculite Mine
Table 1
Tree bark sample results—Forest Service land northeast of the former vermiculite mine.
| Location | Tree Species | Amphibole structures/ |
| Alexander Test Site | Tamarack | 36,898 | Alexander Test Site | Tamarack | 158,583 | Alexander Test Site | Tamarack | 112,336 | Rainy Divide Trail 12S | Ponderosa pine | 568,137 | Rainy Divide Trail 12S | Douglas Fir | 12,356,979 | Rainy Divide Trail 12S | Douglas Fir | 15,383,941 | Rainy Divide Trail 12S | Douglas Fir | 13,377,926 | Bark sample collected in Missoula, | Ponderosa pine | | MT. Serves as control sample |
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(a)ND = Nondetect.
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