In this subchapter:
(1) “Exploration mining lease” means any lease, option to lease, option to purchase or similar conveyance entered into for the purpose of determining the presence, location, quality or quantity of nonferrous metallic minerals or for the purpose of mining, developing or extracting nonferrous metallic minerals, or both under ch. 293. Any lease, option to lease, option to purchase or similar conveyance entered into by a mining company is rebuttably presumed to be an exploration mining lease.
(3) “Mining company” means any person or agent of a person who has a prospecting or mining permit under s. 293.45 or 293.49.