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Alley Spring Roller Mill or Red Mill in Alley Spring, on Missouri Route 106, approximately five miles west of Eminence, in Shannon County, Missouri. The building is a red 2 1/2 story rectangular frame structure on a foundation of mortared rough cut local limestone blocks, and is oriented north to south'on the west bank of the Alley Spring pond. On the south and east are extensive recreation facilities including picnic, parking and camping areas.

Exterior: Sawn wood shingles cover the gable roof

Openings: a 43" x 41" opening is in the south foundation wall near the east corner. It is covered with bars made of peeled saplings,, A similar opening near the west end (used in 1900 for a shaft to a sawmill) has been mortared up. Another opening of this type is near the center of the east foundation. There are three bays in the east and west sides, two in the ends. In both center first floor bays are doors made of vertical planks 0 They are S'll" x 6'5" (west) and 3 1 x 6'5" (east). Windows are double sash, with 2x2 lights and are 28" x 62" in size. Those in the third floor are 31" square with four lights.

The basement houses the turbine shaft, pulleys and conveyors with belts furnish power to the milling machinery on the floors above. The floor is dirt.

First Floor: There is a 9'2H x 13'10" room in the northeast corner. Walls and ceiling of this room are panelled with 3 1/4" tongue and groove boards. Windows are in the north and east walls and a door is in the center of the south partition. The remainder of this floor is undivided. Ceiling and walls are sheathed with 1" x 10" boards. A 3'3" wide wooden stair against the north interior wall leads to the second floor. All first floor ceilings are 8' high. Four steel rollers and a single stone burr are lined north to south on the wood floor outside the room. They are: a "Gray Patent Noiseless Roller," made by Edward P. Allis and Company, Milwaukee, Wisconsin. The last patent date on it is 1881. Next are three "Mawhood Rollers," made by the Richmond City Mill Works, Richmond, Indiana. The last patent date on them is July 3, 1883. A stone burr used for grinding demonstrations has replaced a fourth "Mawhood Roller."

Lupin flour is a type of flour made from the seeds of the Lupin flower. In recent years there had been renewed interest in using lupin flour in regular foods, it has a high protein and fibre content and can be easily incorporated into many grain products such as bread. Most of the world's commercial lupin supply, about 80 per cent, is grown in Western Australia. It sold for use as liverstock feed while conditioning the soil by nitrogen fixing.

Edible lupins are referred to as sweet lupins because they contain smaller amounts of toxic alkaloids than the bitter lupin varieties. Newly bred variants of sweet lupins are grown extensively in Germany; they lack any bitter taste and require no soaking in salt solution. The seeds are used for different foods from vegan sausages to lupin-tofu or baking-enhancing lupin flour. Protein content slightly over 30%. Used to replace soy products in specialty baking and pasta products. Can also replace eggs and butter to enhance colour. Contains non-starch polysaccharides which act like both soluable, such as oat fibre and insoluable fibre, Bran fibre. Naturally high in antioxidents, tocopherols. 50g has 100% daily intake.

Those taking part in the study were put on a weight loss diet and split into two groups. For a year, one group ate food incorporating the 40 per cent lupin flour, included bread, pasta and biscuits, and the other group ate foods made solely with wholemeal flour. The researchers found that while both the lupin group and the wholemeal group lost similar amounts of weight, the lupin group displayed bigger improvements in several heart disease risk factors.

Allegry risks
Lupin allergy has been recognised for some time in Europe, where lupin flour is used widely to replace cereal grains in rice, pasta and bakery products. The prevalence of lupin allergy has increased markedly in some countries, especially France, which permitted the addition of lupin flour to wheat flour in 1997. The major allergens in lupin are also found in peanuts.