 KATY, Texas , April 15, 2022 PRNewswire -- U.S. Silica Holdings, Inc. NYSE: SLCA announced today that it will release its first quarter 2022 financial results before the New York Stock Exchange opens on Friday, April 29, 2022. Conference Call This release will be followed by a conference call for investors on Friday, April 29, 2022 at 7:30 a.m. 