Affiliation: | 1. U.S. Office of Surface Mining, 415 Market Str, Harrisburg, PA, 17101, USA 2. Pennsylvania Bureau of Abandoned Mine Reclamation, 286 Industrial Park Rd, Ebensburg, PA, 15931, USA 3. Carmeuse Stone and Lime Technology Center, 3600 Neville Rd, Pittsburgh, PA, 15225, USA
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