"Top Women" at U.S. Steel's Gary, Indiana, Works, 1940-1945
by The U.S. National Archives

Original Caption: Like Girls from Mars Are These "Top Women" at U.S. Steel's Gary, Indiana, Works. Their Job Is to Clean Up at Regular Intervals Around The Tops of Twelve Blast Furnaces. As A Safety Precaution, the Girls Wear Oxygen Masks., 1940 - 1945 U.S. National Archives' Local Identifier: 86-WWT-33(58) Subjects: World War, 1939-1945 Labor Women Persistent URL:
Alexander, Ruth
by San Diego Air & Space Museum Archives

Catalog #: BIOA00026 Last Name: Alexander First Name: Ruth Notes: Repository: San Diego Air and Space Museum Archive

Buck Trueheart and safety series
by The Library of Virginia

Title: Buck Trueheart and safety series Date: 1952 May Identifier: Hopewell UMWA Collection 503A Format: 1 negative, safety film Rights Info: No known restrictions on publication. Repository: Library of Virginia, Prints and Photographs, 800 E. Broad St., Richmond, VA, 23219, USA, digitool1.lva.lib.va.us:8881/R

SNR 0103-72.6: Chandra Finds Rich Oxygen Supply inside Glowing Ring (A supernova remnant in the Small Magellanic Cloud, a galaxy about 190,000 light years from Earth.)
by Smithsonian Institution

Description: Chandra's image shows a striking, nearly perfect ring about 150 light years in diameter surrounding a cloud of gas rich in oxygen and shock-heated to millions of degrees Celsius. The ring marks the outer limits of a shock wave produced as material ejected in the supernova explosion plows into interstellar gas. The size of the ring indicates that we see the supernova remnant as it was about 10,000 years after its progenitor star exploded. Oxygen is synthesized by nuclear react . . .