610 ILCS 110/1
That in all counties of the third class, and in all cities having not less than 50,000 inhabitants, where bulk grain, millstuffs or seeds are delivered by any railroad transporting the same from initial points to another road for transportation to other points, such road or roads receiving the same for transportation to said points or other connections leading thereto, shall provide suitable appliances for unloading, weighing and transferring such property from one car to another without mixing or in any way changing the identity of the property so transferred, and such property shall be accurately weighed in suitably covered hopper scales, which will determine the actual net weight of the entire contents of any carload of grain, millstuffs or seeds at a single draft, without gross or tare, and which weights shall always be given in the receipts or bills of lading and used as the basis of any freight contracts affecting such shipments between such railroad companies and the owners, agents or shippers of such grain, millstuffs or seeds so transported and transferred.
610 ILCS 110/1