heavy metal

Related Terms
Arsenic, beryllium, cadmium, chromium, lead, manganese, mercury, nickel, and selenium are some of the metals (called 'heavy' because of their high relative atomic mass) which persist in nature and can cause damage or death in animals, humans, and plants even at very low concentrations (1 or 2 micrograms in some cases). Used in industrial processes, they are carried by air and water when discharged in the environment. Since heavy metals have a propensity to accumulate in selective body organs (such as brain and liver) their prescribed average safety levels in food or water are often misleadingly high.

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You need to know be very experienced in a factory setting if you want to start working with heavy metal.
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I was not a huge fan of heavy metal and I found it to be kind of loud and obnoxious and also it hurt my ears.
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You will need to have some very quality and powerful machinery any time that you will be working with heavy metal.
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