In surveying a laboratory, a health physicist wipes a contaminated surface and runs an absorption curve using a thin end window counter and aluminum absorbers. The range of the beta particles (no gammas were found) was 800 mg/cm2 Al. What could the contaminant be? What further studies could be done on the smear sample to help verify the identification of the contaminant?

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Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.