X-ray technicians place a film strip over a newly welded joint of pipeline to check for closure October 3, 2000 near Howell, Michigan, 60 miles north of Detroit. The exposure time is nine minutes. The pipeline will carry natural gas from Canada to the northeastern The demand for cleaner natural gas, estimated to be growing at a year, is requiring more energy infrastructure to be built. Concurrently, concerns about pipeline safety are growing. At present, the has 270,000 miles of interstate gas pipelines in place.

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Keywords: blue, business, collar, construction, crane, finance, gas, industrial, natural, pipelines, resources, welders, wetlands, workers