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1. California Coastal Oil Platforms, 2002

2002. California. Department of Fish and Game. Marine Resources Region. This point shapefile depicts locations of offshore oil platforms on the California coast.This coverage was developed for Department of Fish and Wil... California. Department of Fish and Game. Marine Resources Region.

2. Sand and Gravel Operations in the United States

2002. Geological Survey (U.S.) Minerals Information Team. This point shapefile includes sand and gravel operations in the United States. These data were obtained from information reported voluntarily to th... National Atlas of the United States.