Substances that absorb neutrons to scram a nuclear chain reactions:
control rod make up:
silver indium cadium
other substances to absorn neutrons or shield radiation:
heavy water boron cobalt hafnium dysprosium gadolinium samarium erbium europium
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Radioactive Nuclear Power
Radioactive Drew
Directions:
Titan Missile Museum
1580 W Duval Mine Rd
Green Valley, AZ 85614