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. Author manuscript; available in PMC: 2020 Mar 4.
Published in final edited form as: Curr Environ Health Rep. 2019 Sep;6(3):137–147. doi: 10.1007/s40572-019-00237-5

Fig. 3.

Fig. 3

Photograph taken by a miner in 2012 at a surface coal mine; it shows three miners enveloped in a dust cloud loading drill holes to blast overburden. Reprinted with permission from “Debilitating Lung Disease Among Surface Coal Miners With No Underground Mining Tenure,” by C.N. Halldin, W.R. Reed, et al., 2015, J Occup Environ Med, 57 (1):62–67