Mining Activities

Mining, processing, and the use of coal, natural gas, phosphate rock, and rare earth deposits result in the concentration and release or disposal of large amounts of low-level radioactive material (UNSCEAR 1977). Coal-fired power plants release as much radioactivity (radon) to the environment as nuclear facilities, and the fly ash residue contains low levels of several natural radioisotopes. Natural gas is one of many radon sources in the environment. Phosphate rock always has associated natural radioisotopes; in many cases, tailings from phosphate operations have levels above those allowed by the

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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