Castle Bravo
Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of "Operation Castle". Detonated on March 1, 1954, the device was the most powerful nuclear device detonated by the United States and its first lithium deuteride fueled thermonuclear weapon. Castle Bravo's yield was 15 megatons of TNT, 2.5 times the predicted 6.0 megatons, due to unforeseen additional reactions involving Li, which led to the unexpected radioactive contamination of areas to the east of Bikini Atoll.
Anastasio Ballestrero
Ballestrero agreed to scientific testing being performed on the Shroud of Turin in October 1978 but refused to permit radiocarbon dating testing as it required removing samples from the shroud itself. Once technical improvements made it possible to use samples the size of postage stamps the cardinal permitted samples to be cut in April 1988 which he himself supervised to ensure it was carried out in an appropriate manner. These would be tested in three labs in Switzerland as well as in the United States and the United Kingdom.