WARRIOR MET COAL, INC.

The following is a glossary of selected terms used in the Annual Report:

Ash. Impurities consisting of silica, iron, alumina and other incombustible matter that are contained in coal. Since ash increases the weight of coal, it adds to the cost of handling and can affect the burning characteristics of coal.

Assigned reserves. Coal that is planned to be mined at an operation that is currently operating, currently idled or for which permits have been submitted and plans are eventually to develop the mine and begin mining operations.

Bituminous coal. A common type of coal with moisture content less than 20% by weight. It is dense and black and often has well-defined bands of bright and dull material.

British thermal unit (“Btu”). A measure of the thermal energy required to raise the temperature of one pound of pure liquid water one degree Fahrenheit at the temperature at which water has its greatest density (39 degrees Fahrenheit).

Coal seam. Coal deposits occur in layers. Each layer is called a “seam.”

Coke. A hard, dry carbon substance produced by heating coal to a very high temperature in the absence of air. Coke is used in the manufacture of iron and steel. Its production results in a number of useful by-products.

Coke strength after reaction ("CSR"). Refers to coke "hot" strength, generally a quality reference in a simulated reaction condition in an industrial blast furnace.

Commission or the SEC. Securities and Exchange Commission.

Continuous miner. A machine used in underground mining to cut coal from the seam and load onto conveyors or shuttle cars in a continuous operation. In contrast, a conventional mining unit must stop extracting in order to begin loading.

Continuous mining. A form of underground mining that cuts the coal from the seam and loads the coal on to a conveyor system continuously, thus eliminating the separate cycles of cutting, drilling, shooting and loading.

CSX. CSX Corporation.

EPA. Environmental Protection Agency.

Development Stage Property. A property that has mining reserves disclosed, but no material extraction.

Hard coking coal (“HCC”). Hard coking coal is a type of steelmaking coal that is a necessary ingredient in the production of strong coke. It is evaluated based on the strength, yield and size distribution of coke produced from such coal, which is dependent on the rank and plastic properties of the coal. Hard coking coals trade at a premium to other coals due to their importance in producing strong coke and because they are a limited resource.

Indicated mineral resource. That part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person (as defined in the SEC rules) to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit. Because an indicated mineral resource has a lower level of confidence than the level of confidence of a measured mineral resource, an indicated mineral resource may only be converted to a probable mineral reserve.

Inferred mineral resource. That part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability.

Longwall mining. A form of underground mining that employs a shearer with two rotating drums pulled mechanically back and forth across a long exposed coal face. A hydraulic system supports the roof of the mine while the drums are mining the coal. Conveyors move the loosened coal to an underground mine conveyor that transports coal to the surface. Longwall mining is the most efficient underground mining method.

Measured mineral resource. That part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The level of geological certainty associated with measured mineral resource is sufficient to allow a qualified person (as defined in the SEC rules) to apply modifying factors, in sufficient detail to support mine planning and final evaluation of the economic viability of the deposit. Because a measured mineral resource has a higher level of confidence than the level of confidence of either an indicated mineral resource or an inferred mineral resource, a measured mineral resource may be converted to a proven mineral reserve or to a probable mineral reserve.

Metallurgical (“met”) or steelmaking coal. The various grades of coal with suitable carbonization properties to make coke or to be used as a pulverized injection ingredient for steel manufacture, including hard coking coal (see definition above), semi-soft coking coal and PCI coal. Steelmaking coal quality depends on four important criteria: (1) volatility, which affects coke yield; (2) the level of impurities, including sulfur and ash, which affect coke quality; (3) composition, which affects coke strength; and (4) other basic characteristics that affect coke oven safety. Steelmaking coal typically has particularly high Btu characteristics but low ash and sulfur content.

Metric ton. Equal to approximately 2,205 pounds. The international standard for quoting price per ton is based in U.S. dollars per metric ton. Unless otherwise indicated, the metric ton is the unit of measure referred to in this Annual Report and any reference to “ton(s)” or “tonnage” in this Annual Report refers to metric ton(s). One metric ton is equivalent to 1.10231 short tons.

Mineable Coal. That portion of the coal reserve base which is commercially mineable and excludes all coal that will be left, such as in pillars, fenders or property barriers.

Mineral Reserve. Is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted.

Mineral Resource. Is a concentration or occurrence of material of economic interest in or on the Earth's crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction. A mineral resource is a reasonable estimate of mineralization, taking into account relevant factors such as cut-off grade, likely mining dimensions, location or continuity, that, with the assumed and justifiable technical and economic conditions, is likely to, in whole or in part, become economically extractable. It is not merely an inventory of all mineralization drilled or sampled.

Modifying Factors. The factors that a qualified person must apply to indicated and measured mineral resources and then evaluate in order to establish the economic viability of mineral reserves. A qualified person must apply and evaluate modifying factors to convert measured and indicated mineral resources to proven and probable mineral reserves. These factors include, but are not restricted to: Mining; processing; metallurgical; infrastructure; economic; marketing; legal; environmental compliance; plans, negotiations, or agreements with local individuals or groups; and governmental factors. The number, type and specific characteristics of the modifying factors applied will necessarily be a function of and depend upon the mineral, mine, property, or project.

MSHA. Mine Safety and Health Administration.

Overburden. Layers of earth and rock covering a coal seam. In surface mining operations, overburden must be removed prior to coal extraction.

PCI coal. Coal used by steelmakers for pulverized coal injection (PCI) into blast furnaces to use in combination with the coke used to produce steel. The use of PCI allows a steel maker to reduce the amount of coke needed in the steel making process.

Preparation plant. Preparation plants are usually located on a mine site, although one plant may serve several mines. A preparation plant is a facility for crushing, sizing and washing coal to remove impurities and prepare it for use by a particular customer. The washing process has the added benefit of removing some of the coal’s sulfur content.

Probable mineral reserves. Are the economically mineable part of an indicated and, in some cases, a measured mineral resource.

Productivity. As used in this Annual Report, refers to clean metric tons of coal produced per underground man hour worked, as published by the MSHA.

Proven mineral reserves. Are the economically mineable part of a measured mineral resource and can only result from conversion of a measured mineral resource.

Reclamation. The process of restoring land and the environment to their original or otherwise rehabilitated state following mining activities. The process commonly includes “recontouring” or reshaping the land to its approximate original appearance, restoring topsoil and planting native grass and ground covers. Reclamation operations are usually underway before the mining of a particular site is completed. Reclamation is closely regulated by both state and federal law.

Recoverable reserves. Metric tons of mineable coal that can be extracted and marketed after deduction for coal to be left behind within the seam (i.e. pillars left to hold up the ceiling, coal not economical to recover within the mine, etc.) and adjusted for reasonable preparation and handling losses.

Reserve. That part of a mineral deposit that could be economically and legally extracted or produced at the time of the reserve determination.

Roof. The stratum of rock or other mineral above a coal seam; the overhead surface of a coal working place.

Slurry Impoundment. The entire structure used for coal slurry waste disposal, including the embankment, basin, beach, pool, and slurry. During the process of mining and cleaning coal, waste is created and must be permanently disposed of in an impoundment. Slurry, a combination of silt, dust, water, bits of coal and clay particles is the most commonly disposed of material held in an impoundment.

Subsidence. Lateral or vertical movement of surface land that occurs when the roof of an underground mine collapses. Longwall mining causes planned subsidence by the mining out of coal that supports the overlying strata.

Sulfur. One of the elements present in varying quantities in coal that contributes to environmental degradation when coal is burned. Sulfur dioxide is produced as a gaseous by-product of coal combustion.

Surface mine. A mine in which the coal lies at or near the surface and can be extracted by removing the covering layer of soil (see “Overburden”) without tunneling underground.

Tonor tonnage. See “metric ton” above.

Thermal coal. Coal used by power plants and industrial steam boilers to produce electricity, steam or both. It generally is lower in Btu heat content and higher in volatile matter than steelmaking coal.

Underground mine. Also known as a “deep” mine, it is usually located several hundred feet or more below the earth’s surface. An underground mine’s coal is typically removed mechanically and transferred by shuttle car, conveyor and hoist to the surface.