As used in this article, unless the context requires a different meaning:
"Impound water" means to impound water for use in carrying out any part of the process necessary in the production or preparation of minerals.
"Refuse" means waste material resulting from a mineral mining operation.
"Silt" means fine particles resulting from a mineral mining operation, suspended in or deposited by water.
"Water" means water used in a mining operation.
Va. Code § 45.2-1300