NOVELTY - An integrated fermentation and feedlot system having fermentation unit (6), separation unit, extraction unit, hydroponic growth unit, cattle feeding unit, manure separation unit, liquid digester unit (40), solid composting unit, and unit for combining overhead gases from the feedlot facility and methane (44) from the digester, is new.    USE - To produce ethanol, and cattle feed (claimed).    ADVANTAGE - The integrated fermentation and feedlot system enables all by-products produced within the system to be used by other operations within the system, and hence minimizes the waste. The by-products not used within the system are also environmentally friendly. The system produces wet mash rich in nutrition value all year round and hence enables feeding of the animals year round even in the coldest climate. The manure and farm runoff which is of major environmental pollution concern is reduced since the manure obtained is digested to produce methane. The system creates an optimum environment for animals since the possibility of nuisance odors leaving the site is reduced, and enables to obtain healthier cattle which gain weight significantly faster than cattle raised in other environments. The integrated system has an improved overall efficiency and enables to obtain higher economy.    DETAILED DESCRIPTION - An integrated fermentation and feedlot system having:    (a) unit for fermenting grain products to generate ethanol (8) in a fermentation liquid;    (b) unit for separating the fermentation liquid into green beer and mash;    (c) unit for extracting ethanol from the green beer;    (d) hydroponic growth unit for using the carbon dioxide (10) from the fermentation step and liquid from the extraction facility;    (e) unit for feeding cattle in a feedlot operation by using spent liquid and spent mash (14) from the fermentation facility supplemented with other cattle feed materials;    (f) unit for separating manure (32) obtained from the feedlot operation into liquid and solid fractions (36 and 38);    (g) unit for digesting the liquid obtained from the manure separation process to generate methane containing gas and solids;    (h) unit for composting solids (42) obtained from the digester unit and solids from the manure separator unit; and    (i) unit for combining overhead gases from the feedlot facility and methane from the digester unit to generate energy (50) for operating the fermentation facility.    INDEPENDENT CLAIMS are also included for:    (1) integrated ethanol production and cattle feedlot system having a unit for grinding cereal, a unit for disintegrating ground cereal from the grinding unit in combination with water, and under elevated pressures and temperatures, a unit for adding an enzyme to the treated cereal product to generate fermentable sugars, a unit for fermenting the enzyme treated cereal product, a unit for separating fermented product from the fermentation unit into solid and liquid fractions, a unit for distilling liquid product from the separation unit into ethanol concentrated vapors and ethanol lean liquid, and a molecular sieve unit for separating water from the ethanol rich liquid obtained from the distillation unit;    (2) production of ethanol, comprising:    (a) grinding the cereal into mash;    (b) adding water;    (c) extruding through an extruder under elevated temperature and pressure to generate a softened and decomposed material;    (d) delivering the decomposed mash to a fermentation unit to which yeast is added;    (e) fermenting the softened mash to generate solid material and alcohol-enriched fluid;    (f) separating the solids and the alcohol-enriched liquid from the fermentation process;    (g) vaporizing the alcohol-enriched mixture into an alcohol-lean liquid and an alcohol vapor;    (h) distilling the alcohol-enriched vapor into a more highly alcohol-enriched vapor, and an alcohol-lean liquid; and    (i) molecular sieving the alcohol from water in the higher alcohol-enriched vapor; and    (3) process of controlling and monitoring an ethanol process facility which has:    (a) a thermocouple unit for sensing and controlling the temperature of the components of the ethanol process facility;    (b) a unit for sensing and controlling the pressure of components of the ethanol process unit;    (c) a process control computer unit for controlling inputs and outputs of the thermocouple and sensing units;    (d) a programmed computer unit connected to the process control computer unit by data link;    (e) a modem unit connected to the computer unit, modem unit (I) connected by telephone connection to the modem unit which is connected to the computer unit;    (f) modem unit (II) connected by telephone connection to modem unit (I);    (g) a process expert computer unit connected by telephone connection to modem unit (I); and    (h) a regulator computer unit connected by telephone connection to modem (II).    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a fully integrated fermentation and feedlot system.    Fermentation unit (6)    Ethanol (8)    Carbon dioxide (10)    Spent beer (12)    Spent mash (14)    Manure (32)    Liquid fraction (36)    Solid fraction (38)    Digester (40)    Solids (42)    Methane (44)    Energy (50).