Hi Crush Partners LP, formerly Hi-Crush Partners LP, is a domestic producer of monocrystalline sand, a specialized mineral that is used as a proppant to enhance the recovery rates of hydrocarbons from oil and natural gas wells. The Company reserves consist of Northern White sand, a resource existing in Wisconsin and limited portions of the upper Midwest region of the United States. It owns, operates and develops sand reserves and related excavation and processing facilities and will seek to acquire or develop additional facilities. The Company's 561-acre facility with integrated rail infrastructure, located near Wyeville, Wisconsin, enables it to process and deliver approximately 1,600,000 tons of frac sand per year. It owns and operates the Wyeville facility, which is located in Monroe County, Wisconsin and, as of December 31, 2011, contained 48.4 million tons of proven recoverable sand reserves of mesh sizes it has contracted to sell.