The DOT has this week posted a 1998 report on burial, inspection and risk to off-shore pipelines in the Gulf of Mexico. This Texas Transportation Institute study examined burial depths, various sub-sea inspection techniques and the effects of weather and erosion on pipelines, as well as other risk factors. Given the current interest in off-shore pipeline safety, it might be worth examining. It may be found at dmses.dot.gov/docimages/pdf89/278236_web.pdf.