Smart Sand, Inc. is a producer of Northern White raw frac sand, which is a proppant used to enhance hydrocarbon recovery rates in the hydraulic fracturing of oil and natural gas wells. The Company sells its products primarily to oil and natural gas exploration and production companies and oilfield service companies under a combination of long-term take-or-pay contracts and spot sales in the open market. It owns and operates a raw frac sand mine and related processing facility near Oakdale, Wisconsin. In addition to the Oakdale facility, it owns a second property in Jackson County, Wisconsin, known as Hixton site. Its sand reserves include a balanced concentration of coarse (20/40, 30/50 and 40/70 gradation) sands and fine (60/140 gradation) sand. Its reserves contain deposits of approximately 20% of 20/40 and coarser substrate, over 40% of 40/70 mesh substrate and approximately 40% of 100-mesh substrate. Its 30/50 gradation is a derivative of the 20/40 and 40/70 blends.