U.S. Silica Announces Major Expansions to Supply Chain and Logistics Network

[PR Newswire] – FREDERICK, Md., Feb. 11, 2014 /PRNewswire/ — U.S. Silica Holdings, Inc. (SLCA) announced today that the Company has entered into an agreement with Union Pacific Railroad (UP) to build a new, unit train capable silica sand storage facilit more

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