Operating regulations to govern the methods of mining oil shale, phosphate, sodium, and potash, and the safety and welfare of employees in connection therewith
Subtitle: Under the acts approved February 25, 1920 (41 Stat. 437) and October 2, 1917 (40 Stat. 297)
Publisher: Govt. print. off.
Published: 1922
Place of publication: Washington
Language: eng
Subjects: Mining law; Sodium; Potash; Oil-shale mines and mining; Petroleum; Phosphates
Other titles: Leasing regulations, oil shale, phosphate, and sodium.