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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 furances. As a safety precaution, the girls wear oxygen masks. U.S. Steel Corp. (Women's Bureau)

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 furances. As a safety precaution, the girls wear oxygen masks. U.S. Steel Corp. (Women's Bureau)

awesome Four Good reasons Environment War I Functions For Battlefield, And Two Good reasons It Doesn’t

awesome Four Good reasons Environment War I Functions For Battlefield, And Two Good reasons It Doesn’t

WW1: Aviator's oxygen mask in position and ready to use. Note the handwritten caption on the photo. WW1 planes could not safely fly at 10,000 ft, ceiling for deploying oxygen masks, so the development of the device looked at the future.

WW1: Aviator's oxygen mask in position and ready to use. Note the handwritten caption on the photo. WW1 planes could not safely fly at 10,000 ft, ceiling for deploying oxygen masks, so the development of the device looked at the future.

1943 - Miss Kathleen Wheeler sharpens band saws that cut steel in a steel mill in Northern England, aiding the war effort on the Home Front during World War Two, November 1943. (Photo by Popperfoto/Getty Images)

1943 - Miss Kathleen Wheeler sharpens band saws that cut steel in a steel mill in Northern England, aiding the war effort on the Home Front during World War Two, November 1943. (Photo by Popperfoto/Getty Images)

Steel Mill Molten Steel Leak Video with the LX7 (VIDEO IS ONLINE NOW)

Steel Mill Molten Steel Leak Video with the LX7 (VIDEO IS ONLINE NOW)

Photo taken in Korea 1953. The kitten, Miss Hap was only 2 wks old. The  kitten was rescued by Marine Sergeant Frank Praytor.     In 2010, Praytor wrote, "Miss Hap was weaned on meat out of C rations and grew into a big girl who thought I was her father. When I left Korea, I left her in the care of another Marine. When I returned in '55, she was alive and well.    At 83, I'm still saving orphans. Have two cats, Molly and Max. They never leave the house."

Photo taken in Korea 1953. The kitten, Miss Hap was only 2 wks old. The kitten was rescued by Marine Sergeant Frank Praytor. In 2010, Praytor wrote, "Miss Hap was weaned on meat out of C rations and grew into a big girl who thought I was her father. When I left Korea, I left her in the care of another Marine. When I returned in '55, she was alive and well. At 83, I'm still saving orphans. Have two cats, Molly and Max. They never leave the house."

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