#### § 292.41 Definitions.

Special terms used in this subpart are defined as follows:

*Act* means the Act of December 31, 1975, as amended (Pub. L. 94-199, 89 Stat. 1117) which established the Hells Canyon National Recreation Area.

*Authorized Officer* is a Forest Service line officer who has been delegated the authority to take certain actions pursuant to the provisions of this subpart.

*Comprehensive Management Plan* is the document that establishes the array, levels, and manner of resource uses within the HCNRA. It is incorporated as part of the Wallowa-Whitman National Forest Land and Resource Management Plan.

*Cultural resources* means historic and archeological resources.

*HCNRA* is the abbreviation for the Hells Canyon National Recreation Area.

*Mechanical equipment* means any contrivance which travels over ground, snow or water on wheels, tracks, skids, or by flotation that is powered by a living source. This term does not include non-motorized rivercraft which is defined separately herein, wheelchairs, or other similar devices used solely to assist persons with disabilities.

*Mining* means any activity related to the discovery, extraction and exploitation of minerals under the Mining Act of 1872, 30 U.S.C. 22 *et seq.,* and the Mineral Leasing Act of 1920, 30 U.S.C. 181 *et seq.,* through the use of, among other things, hydraulic equipment, pans, ground sluicing, sluice boxes, rockers, or suction dredges.

*Motorized equipment* means any machine powered by a nonliving source. This term does not include motorized rivercraft which is defined separately herein or small, hand-held devices such as flashlights, shavers, wristwatches, and Geiger counters.

*Motorized rivercraft* means any boat capable of being mechanically propelled by propeller(s) or jet pump(s) upstream through rapids.

*Non-Motorized rivercraft* means any boat which is not a motorized rivercraft.

*Other lands* means all National Forest System lands in the HCNRA except for Wild and Scenic Rivers and Wilderness Lands.

*Paleontological resources* means any remains, trace, or imprint of a plant or animal that has been preserved in the Earth's crust prior to the Holocene epoch.

*Selective cutting* means single tree or group selection cutting and is the periodic removal of trees individually or in small groups from an uneven aged forest in order to maintain diverse stands, with the sustainability and improvement of the forest using an ecosystem approach to management being a primary consideration.

*Suitable* means it is appropriate to apply certain resource management practices to a particular area of land, as determined by an ecological and environmental analysis of the land. A unit of land may be suitable for a variety of individual or combined management practices.

*Wild and Scenic Rivers* means the segments of the Snake, Rapid, and Imnaha Rivers designated as components of the National Wild and Scenic Rivers System and any other river or segment thereof in the HCNRA hereafter designated. Wild and Scenic Rivers include all National Forest System lands within the designated Wild and Scenic River corridor.

*Wilderness lands* means the Hells Canyon Wilderness, that portion of the Eagle Cap Wilderness in the HCNRA, and any other wilderness in the HCNRA hereafter designated as components of the National Wilderness Preservation System.