Hi-Crush Partners LP (the “Partnership”) announced that as a result of Mr. Oehlert’s appointment as Chief Operating Officer of Hi-Crush GP LLC (the “General Partner”), he will assume the role of principal operating officer of the Partnership, and Robert E. Rasmus will cease to be the principal operating officer of the Partnership as of May 21, 2019, but will continue in his role as Chief Executive Officer of the General Partner.