a different Norfolk Southern teach derails in Ohio - NPR

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yet another Norfolk Southern instruct derails in Ohio  NPR

Norfolk Southern makes huge protection changes after third coach derailment  CNBC

Norfolk Southern coach derailment in Clark County: What we know  WLWT

vigour restored in Clark County after train derailment in Springfield  WHIO

Norfolk plans so as to add more detectors to capture overheated bearings  Reuters