EXAMPLE A: A company blasts limestone from the ground, bulldozers pick the limestone up and put it in trucks; these trucks transport the limestone to a crusher some distance from the quarry site. The first change in the "form" or "condition" of the limestone, while it is tangible personal property, occurs when the stone is crushed in the crusher. The blasting of the stone from the ground and its transport to the crusher would be acts preparatory to and not a part of processing. Thus, fuel used in the bulldozers and transport trucks would not be fuel used in processing, Linwood Stone Products, supra.
EXAMPLE B: Pumps remove water from underground wells and pump that water through pipes to a water treatment plant. At the treatment plant, the water passes initially through an aeration system which adds oxygen to it. At other points in the plant, potassium and chlorine are added to the water and iron is removed. After these acts are performed, clean, drinkable water exists. The first change, however, in the condition of the water occurs when it passes through the aeration system and oxygen is added to it. The withdrawal of the water from the ground and its transport to the aeration system would not be a part of processing. Thus, electricity used by the pumps which pump the water to the aeration system would not be used in processing. However, by way of contrast, electricity used to transport the water between, for example, the aeration system and the point where potassium is added to the water would be used in processing. Southern Sioux Rural Water System, Inc., supra.
Example C: Water is processed in a treatment plant. The last act at the plant necessary to render the water drinkable or a "finished product" is the addition of chlorine. After the addition of chlorine, the water is pumped first into wells and later into water towers where it is held for distribution. The pumping of this drinkable water from the point where the chlorine is added to the wells and the tower is not a part of processing because processing of the water ended with the addition of the chlorine; thus, electricity used in these pumps is not electricity used in processing. Southern Sioux County Rural Water System, Inc., supra.
A manufactures nails. In A's factory is a machine which draws steel into long rods the width of whatever nail A may wish to manufacture. After this machine draws the steel into the desired-size rods, the rods are moved to a second machine by a conveyor belt. This second machine cuts the rods into the length of nail which A desires. A second conveyor belt then transports these cut rods to a third machine which sharpens one end of the rod to a point and puts a "nail head" on the other end of the rod. The activities of the three machines are clearly processing, in that they are activities which change the form, context or condition of raw material, and as a result of those activities, marketable tangible personal property or a finished product is created. The two conveyor belts move the partially finished nails from one piece of processing equipment to another while processing is occurring. Since the activities of the conveyors are very closely interconnected with and an integral part of the operation of the various pieces of processing equipment while processing is occurring, the conveyor belts are involved in processing as well.
Iowa Admin. Code r. 701-18.29