Difference between Mudjacking and Polyurethane Concrete Raising. Also called foam lifting, polyurethane for concrete raising has been in practice for about 20 years. However, the price of the equipment and polyurethane material made it way too expensive for private contractors to adopt and replace traditional mudjacking.
Farmed salmon available in Washington state markets is produced in Washington State, Canada, Maine, or Chile. Studies on salmon from these sources have shown low levels of organic contaminants in the fish.
Although wild populations are still nearly extinct, farms off the coast of Maine that grow U.S. Atlantic salmon are expanding. Nutritionally, they are just as good as wild. I lump wild and farmed salmon together, says Charles Santerre, PhD, a professor of food toxicology at Purdue University, in West Lafayette, Ind.