Imagine a vessel where fire or hot gas is trapped inside tubes, and then the outside of the tube is surrounded by water! So, because of the presence of fire inside the tube, it is…

The common septic tank is not an ordinary vessel. This chamber is, often, made of solid concrete. It may also be made of plastic or fiberglass. This is an underground chamber able to hold domestic wastewater. The…

Salt Lake City’s North Temple Landfill opened in the 1950s. But, in 1979 it was closed with a number of other landfills across the country because the new federal environmental laws couldn’t be afforded by…