1. ^{{cite news |author= |coauthors= |title=Big Radium Owner Threatens A Strike. O. B. Willmarth Indignant At Secretary Lane's Announced Policy |url=https://query.nytimes.com/gst/abstract.html?res=9807E6DC1730E733A25755C1A9679C946596D6CF |quote=A suggestion was made yesterday by O. Barlow Willmarth, President of the Colorado Carnotite Company, which controls ore deposits from which nearly a half of the world's available supply of radium has been extracted, that American radium producers might soon shut down their works as a protest against the threatened governmental policy of withdrawing all radium producing lands from entry. |work=New York Times |date=January 16, 1914 |accessdate=2010-07-03 }}