Rhino Resource Partners LP (OTCQB:RHNO) is a diversified energy limited partnership that is focused on coal and energy related assets and activities, including energy infrastructure investments. We produce, process and sell high quality coal of various steam and metallurgical grades from multiple coal producing basins in the United States. We market our steam coal primarily to electric utility companies as fuel for their steam powered generators. Customers for our metallurgical coal are primarily steel and coke producers who use our coal to produce coke, which is used as a raw material in the steel manufacturing process. In addition to operating coal properties, we manage and lease coal properties and collect royalties from such management and leasing activities. As of December 31, 2018, we controlled an estimated 268.5 million tons of proven and probable coal reserves and 164.1 million tons of non-reserve coal deposits.