Project Mercury astronaut candidate Hal Crandall undergoes Flack and Cold Pressor test at Wright-Patterson AFB, Ohio
Ohio United States USA Date:1959, February Duration:1 min 46 sec Sound:NO SOUND
NASA Project Mercury astronaut candidate Lt. Hal R. Crandall, USN undergoes Flack and Cold Pressor test at Wright-Patterson Air Force Base, Ohio. Subject blows into a tube for a given period of time to support a column of mercury. He also plunges his feet into a tub of ice water. Doctor examines pulse and blood pressure before and during the test.
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