(a) Any term used in this article shall have the same meaning as when used in a comparable context in article thirteen or thirteen-a of this chapter, unless a different meaning is clearly required by the context of its use or by definition in this article.
(b) For purposes of this article, the term:
(1) "Coal loading facility" means any building or structure specifically designed and solely used to transfer coal from a coal processing or preparation facility, or from a coal storage facility, or both, or from any means of transportation, to any means of rail or barge transportation used to move coal, including such land as is directly associated with and solely used for the coal loading facility, and including any device or combination of machinery and equipment that is directly associated with and solely used for the loading of coal. This definition applies only when the transfer is to any means of rail or barge transportation and specifically excludes the transfer to any other form of transportation. This may include, but is not limited to, the coal loading tipple, conveyors, coal storage facilities, weighing equipment and rail trackage, if they are directly associated with and solely used for the loading of coal. In no event may the eligible investment in a coal loading facility, for purposes of this credit, include the cost of any coal processing, preparation, blending or sizing facility or equipment, or any combination thereof, even though physically a part of the coal loading facility, and even though such coal processing, preparation, blending or sizing facility or equipment, or any combination thereof, is necessary or essential to the loading of commercially usable or marketable coal.