Fill
Fill means a permanent, non-impounding structure constructed under 816.71 through 816.83 or 817.71 through 817.83 of this chapter for the purpose of disposing of excess spoil or coal mine waste generated by surface coal mining operations or underground mining activities.
Source
30 CFR § 701.5
Scoping language
As used in this chapter, the following terms have the specified meanings, except where otherwise indicated: