Material damage,

Material damage, in the context of 784.30 and 817.121 of this chapter, which pertain to subsidence from underground mining operations, means:
(1) Any functional impairment of surface lands, surface features (including wetlands, streams, and bodies of water), structures, or facilities;
(2) Any physical change that -
(i) Has a significant adverse impact on the affected land's capability to support any current or reasonably foreseeable uses; or
(ii) Causes a significant loss in production or income; or
(3) Any significant change in the condition, appearance, or utility of any structure or facility from its pre-subsidence condition.

Source

30 CFR § 701.5

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Scoping language

As used in this chapter, the following terms have the specified meanings, except where otherwise indicated:

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