The United States Bureau of Mines was established by the Department of the Interior on July 1, 1910.
Notes on verification
Confirmed by multiple government and historical sources (NIOSH/CDC, Wikipedia, mining history archives) distinguishing the May 1910 authorization from the July 1, 1910 operational establishment date. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.77 clusters=2 claim_tier=everyday | framework convergence=partial on U.S. federal government historical records on Bureau of Mines founding (upstreams: U.S. Department of the Interior official history, NIOSH/CDC agency history records) — publishers independent, evidence may not be | kind=empirical eligibility=high]
Sources
- 100 Years of Respiratory Protection History | NPPTL | NIOSH | CDC (seed:health_and_medicine)
- https://www.usbr.gov/history/borhist.html (corroboration)
- https://www.osmre.gov/about/history (corroboration)