http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Operating regulations to govern methods of mining and safety and welfare of employees on leased lands on public domain under Mineral Leasing Acts; potash, Oct. 2, 1917 (40 Stat. 297) and Feb. 7, 1927 (44 Stat. 1057); oil shale, sodium, phosphate, Feb. 25, 1920 (40 Stat. 437); sulfur, Apr. 17, 1926 (44 Stat. 301); gold, silver, and quicksilver, June 8, 1926 (44 Stat. 710); approved June 2, 1927
Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from ProQuest, LLC.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2012. digital, PDF file. ProQuest U.S. Executive Branch Documents, 1910-1932. Mode of access: World Wide Web via ProQuest website.
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