43 C.F.R. § 3601.5
As used in this part the term:
Act means the Materials Act of July 31, 1947, as amended ( 30 U.S.C. 601 , et seq. ).
BLM means the Bureau of Land Management.
Common use area means a generally broad geographic area from which BLM can make disposals of mineral materials to many persons, with only negligible surface disturbance. The use is dispersed throughout the area.
Community pit means a relatively small, defined area from which BLM can make disposals of mineral materials to many persons. The surface disturbance is usually extensive in the confined area.
Mineral materials means, but is not limited to, petrified wood and common varieties of sand, stone, gravel, pumice, pumicite, cinders, and clay.
Performance bond means a bond to ensure compliance with the terms of the contract and reclamation of the site as BLM requires.
Permittee means any Federal, State, or territorial agency, unit, or subdivision, including municipalities, or any non-profit organization, to which BLM issued a free use permit for the removal of mineral materials from the public lands.
Public lands means any lands and interest in lands owned by the United States and administered by the Secretary of the Interior through BLM without regard to how the United States acquired ownership, except lands held for the benefit of Indians, Aleuts, and Eskimos.
Purchaser means any person, including a business or government entity, buying or holding a contract to purchase mineral materials on the public lands.
43 C.F.R. § 3601.5