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Also drawing tourism to the state is the West Virginia State Park & State Forest system, which comprises 45 units covering 164,000 acres. In 2021, over 9 million people visited a West Virginia State Park, the highest number on record. This is partly due to a recent $151 million improvement project that has seen improvements at every park and ...
Unprotected experiments in the U.S. in 1896 with an early X-ray tube (Crookes tube), when the dangers of radiation were largely unknown.[1]The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial sources can have harmful effects on living organisms.