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.
The net result is greatly accelerated depletion of the numbers of fish in the oceans. That is why I have recommended choosing wild Alaskan salmon. It tastes better, is more nutritious than farmed Atlantic salmon, and eating it does not have the environmental impact or health consequences of relying on farmed salmon. The news that Seafood WATCH has approved the new salmon farming technique is certainly welcome. I understand that this action followed several months of investigation by scientists who inspected the production facilities and reviewed feed ratios, fish contaminant and pollution discharge levels at the salmon farms.