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In this exploratory study, it is observed that there is a potentially important dimension of the quality of life that has been effectively ignored in prior migration studies in the U.S.: air quality as reflected by the presence of coal dust  per se . Accordingly, it is hypothesized in this study that an elevated presence of coal dust in close proximity to a prospective residence will act to discourage in-migration (both net in-migration and gross in-migration) because of the greater threat of adverse health impacts and because of elevated expected and/or actual pure economic costs  per se , for example, deterioration of one’s physical assets, including automobile(s) and housing, that accompany close proximity to elevated airborne coal dust. There is strong empirical support for this ‘coal dust/in-migration hypothesis’.

An exploratory study on the migration-pattern impact of coal dust in the US