So the flour should be labeled as such ---i could not find any references to duram wheat---I believe you'll have to lump them together as flour as per below
Ingredients: Wheat flour • Water • Vegetable oil margarine • Sugar • Yeast • Canola oil shortening • Potato starch • Garlic • Salt • Parsley • Seasoning • Diacetyl acid esters of mono and diglycerides • Whey powder • Calcium propionate • Potassium bisulphite
Contains: Wheat • Milk • Sesame • Sulphites
In this example, all food allergens, gluten sources and added sulpthites are declared at least once in the contains statement, even though wheat and potassium bisulphite (sulphites) already appear in the ingredient list. Since a contains statement is being used to declare other known allergen sources (milk and sesame), wheat and sulphites must appear in both places
Stone ground claims
The claim "stone ground" on products is acceptable for products that have been ground between two stones. This claim would not apply to products ground between metal and stone or metal and metal or product that is partially stone ground and partially steel ground. If steel grinding is also used "partially stone ground" would be acceptable.
Hope some of the above is helpful