Panel data analysis of U.S. coal productivity
نویسندگان
چکیده
منابع مشابه
Panel Data Analysis of U.S. Coal Productivity
We analyze labor productivity in coal mining in the United States using indices of productivity change associated with the concepts of panel data modeling. This approach is valuable when there is extensive heterogeneity in production units, as with coal mines. We ̄nd substantial returns to scale for coal mining in all geographical regions, and ̄nd that smooth technical progress is exhibited by ...
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ژورنال
عنوان ژورنال: Journal of Econometrics
سال: 2005
ISSN: 0304-4076
DOI: 10.1016/j.jeconom.2004.06.006