PROJECT PROFILE D’Appolonia performed an in-situ test- ing program at the coal refuse disposal impoundment at a western Pennsyl- vania mine to confirm the applicability of shear strength properties for fine coal refuse (FCR) used in slope stability analyses of the pond embankment and to evaluate potential liquefaction sus- ceptibility of the FCR. Two working platforms were con- structed by pushing coarse coal refuse out into the pond

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