Live feed16:41:00·1187dSECFilingvia QuantisnowU.S. Silica Holdings Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation, Other Events, Financial Statements and ExhibitsByQuantisnow·Wall Street's wire, on your screen.SLCA· U.S. Silica Holdings Inc.IndustrialsOriginal source