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Utility location markers for a fire hydrant, a drinking water line and a natural gas line in Germany. In Germany, the colors used for temporary marking of underground utilities are not standardized like in other countries. However, permanent marker signs are used for utilities like hydrants, drinking water lines and natural gas lines.
GPR depth section (profile) showing a single line of data from the survey of the historic crypt shown above. The domed roof of the crypt can be seen between 1 and 2.5 meters below surface. The concept of radar is familiar to most people. With ground penetrating radar, the radar signal – an electromagnetic pulse – is directed into the ground.
Codan Limited is a manufacturer and supplier of communications, metal detection, and mining technology, headquartered in Adelaide, South Australia with revenue of A$348.0 million (2020). [ 1 ] [ 2 ] Codan Limited is the communications business unit and the parent company of the Codan group, which is engaged in business through its operating ...
The project was delayed by funding problems and leaks in the water tank, but by the end of summer 1982 the detector was operating at full capacity. The first results were published in 1982. [ 4 ] In 1987, it gained fame for detecting 8 of the roughly 10 58 neutrinos emitted by Supernova 1987A .
Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.
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