Was the fish in your tuna salad sustainably harvested? One of the biggest tuna suppliers in the world, privately held Tri Marine, believes it has a responsibility to answer that question in the affirmative.As a result, the company is investing substantially in technology and business processes to prove it, including a new commitment to an end-to-end assessment by the Marine Stewardship Council.What's more, this month Tri Marine is reopening its processing plant in American Samoa after the $70m rehabilitation of an existing facility. The project was designed to optimize energy efficiency and to minimize the environmental impact of its activities on the local community.The site will be capable of handling one million cans of tuna daily when operating at full capacity. It will supply some of the company's biggest customers, including private-label grocery store clients Costco and Fred Meyers - other partners include StarKist and Chicken of the Sea. It also will serve Tri Marine's own fast-growing house brand, Ocean Naturals, sold by its subsidiary The Tuna Store.\[Samoa Tuna Processors] is a great example of how doing the right thing can also be good for business