(a) The term “disposal plant,” or “rendering plant,” or “plant” shall apply to and include any plant and all equipment thereof described or referred to in any section of this chapter that is constructed and intended to be operated for the disposal of poultry by-products, slaughter house offal and wastes, and meat processing plant bones, meat scraps, fats, and all otherwise inedible meats and meat products, the bodies of dead animals or parts thereof or excrements therefrom, by means of burying or burning or cooking or otherwise processing, whether for the purpose of producing or manufacturing by-products or otherwise. Such a term shall also include all substations of any such plant that are used in connection with such business solely for the temporary disposal or storage of such poultry by-products, dead bodies or parts thereof or excrements therefrom pending final delivery thereof to any such disposal plant or rendering plant, and shall also include all vehicles and equipment thereof used in Mississippi for the transportation of such bodies or parts thereof or excrements therefrom, bones, meat scraps, fats, and otherwise inedible meats and meat products to such plant for their disposal therein in the manner herein prescribed.

(b) The term “dead animals” shall mean the carcasses of dead animals, parts thereof or excrements therefrom.

(c) The word “person” shall include individuals, partnerships, corporations, associations and any other legal entities recognized by law.

(d) The term “poultry by-products” shall mean heads, feet, viscera, blood and feathers.

(e) The term “slaughter house offal and wastes” shall mean heads, feet, viscera, blood and any associated material therewith.

(f) The word “commissioner” shall mean the commissioner of agriculture and commerce, or his duly authorized deputies.