When two separate boards have their edges placed against each other. This type of joint is not the strongest of joints, however compared to other types of joints it is easy to fit.
A concrete masonry unit made with fine aggregate and cement that is shaped in a mold. Any of a variety of shaped light-weight or standard weight masonry units.
A disaster which occurred in the Chernobyl power plant in 1986, where one out of four nuclear reactors in the plant exploded, resulting in at least 5% ...
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