into the atmosphere, you cause cells director, making the sludge easily digestible and much less viscous, reducing the volume requirements. we can have fewer and smaller digests. this technology has been in the industry for about 15 years. the enterprise that extensive pilot tests from 2001 through 2003. over the last decade this process has continued to improve. now it has over 20 worldwide with a big presence in the uk. the united states, washington, d.c. will be the first to build this fence and are designed to have the contracts out next week. that is something that is several times bigger. a novel drying technology, nothing new -- it has been practiced for over 100 years, but the purpose is to reduce the volume of bio-solids so that it changes the consistency to make it more suitable for the production of commercial fertilizer or use it as fuel. in recent years there have been more developments in terms of looking at alternatives to high temperature and low temperature drying out and solar energy. this is an example in the bay area. the city has been operating this for about five ye

. >> the oil is going to be extremely viscous almost so sid. not very mow bail or oozing out across the ocean bottom. >> reporter: oil experts say if the hull section stayed intact the oil might be contained indefinitely. oil spill specials tid martin says any leaks would be very slow to surface. >> just glops would come to the surface rather than a large amount. >> reporter: the real experts say to force obsolete ships into retirement. >> there needs to be regulations where this needs to stop. we are only hearing about this one because it is really big. it happens all the time and on a smaller scale. it doesn't take that much oil to kill a lot of animals and affect the environment. >> that's it for this week's "second look." i'm frank somerville. we will see you again next week.