Grilled Salmon Salad with tarragon

1 1/4 cups olive oil 6 tablespoons lime juice 24 ounces salmon fillets , 1-inch thick 3 small tomatoes , chopped 1 small carrot , julienned 1 small zucchini ,[...]

4 salmon fillets , skin removed (4 oz each) 2 tablespoons Dijon mustard 2 tablespoons canola oil 2 sprigs fresh tarragon , leaves only and roughly chopped 1[...]