Global positioning technologies provide essential exploration tool

Simon Corbett, Martin Rayson Quality Engineering & Survey Technology Ltd. Newcastle, U.K. The Navstar GPS system, consisting of 24 operating satellites, provides sufficient coverage of the Earth so that signals can be received almost anywhere in the world at any time. The satellites are arranged in six orbital planes with four satellites located in each plane (Fig. 2). Destin pipeline extension [25,158 bytes]-Automatic welding proceeds earlier this year in a major extension of the Destin pipeline in 700-ft water from Gulf of Mexico Main Pass 284 to Chevron's Gemini hub at Viosca Knoll 900. This 32 mile, 24-in. project was the second of two extens...

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