Title 30-Mineral Resources Part CHAPTER I—Bureau of Mines, Department of the Interior 1 CHAPTER II-Geological Survey, Department of the Interior 200 CHAPTER III-Oil and Gas Division, Department of the Interior 302 CROSS REFERENCES: Atomic Energy Commission domestic uranium program: See 10 CFR Part 60. Federal Power Commission: See Conservation of Power, 18 CFR Chapter I. Foreign Trade Statistics, Bureau of Foreign and Domestic Commerce export declarations: See Commerce, 15 CFR Part 30. Forest Service regulations relating to mineral developments and mining in national forests: See Parks and Forests, 36 CFR Part 251. Interstate Commerce Commission: See Transportation and Railroads, 49 CFR Chapter I. Munitions Board: See National Military Establishment, 34 CFR Chapter I. Bureau of Indian Affairs, Department of the Interior, mining regulations: See Indians, 25 CFR Parts 180, 183, 186, 189, 192, 195, 201, 204, 207, 210. 213. Regulations of the National Park Service, Department of the Interior, relating to mining claims: See Parks and Forests, 36 CFR Chapter I. NOTE: Other regulations issued by the Department of the Interior appear in Title 25, Chapters I and II; Title 32, Chapter III; Title 36, Chapter I; Title 43; Title 48; and Title 50, Chapter I. Production and sale of helium for medical, scientific, and commercial use. Payments required from owners of private lands upon which the Bureau of Mines performs exploration or development work to investigate known Filter-type dust, fume, and mist respirators. Nonemergency gas respirators (chemical cartridge respirators). SUBCHAPTER C-EXPLOSIVES (INCLUDING SHEATHED EXPLOSIVES) AND SUBCHAPTER E-MECHANICAL EQUIPMENT FOR MINES; TESTS FOR Settlements under existing contracts. Initial advance for purchase of helium. Cancellation and assignment of con- 1.20 Federal agencies not affected. AUTHORITY: §§ 1.1 to 1.21 issued under sec. 3, 43 Stat. 1111, as amended; 50 U. S. C. 164 SOURCE: §§ 1.1 to 1.21 appear at 12 F. R. 351, except as noted following section af- § 1.1 Definitions. (a) "Act" means the act authorizing the conservation, (b) "Special helium-production fund" means the fund referred to in subsection (c) "Bureau" means the Bureau of Mines of the Department of the Interior. (d) "Purchaser" means a person, firm, (e) "Purity of helium" means the per- centage by volume of the gaseous ele- ment, helium, in a mixture of that ele- (f) "Contained helium" means the actual quantity, by volume, of helium in a mixture of that element and other gases. The volume of the contained helium bears the same proportion to the volume of the mixture that the purity of the helium bears to 100 percent. (g) "Unit of helium" means 1,000 cubic feet of contained helium measured at, or reduced to, a pressure of 14.7 pounds per square inch absolute and a tempera- (h) "Standard-type cylinder" means a cylinder of approximately 1.5 cubic feet internal volume, designed for a filling pressure of 1,800 pounds per square inch gage or more, which will stand vertically without external support with the center of the valve outlet not less than 501⁄2 inches nor more than 581⁄2 inches above the floor, equipped with a standard-type ceptable to the Bureau as a standard (i) "Standard-type cylinder valve" ing to following specifications: U. S. standard form left-hand threads, 14 threads per inch, threaded portion % inch in length; major diameter not |