Abstract: A method of production and control of animal derived food products, for example milk rich in omega-3 isomers by a commercial entity is herein described. The method comprises providing one or more milk producers with a feed formula to feed cows under set control parameters to produce from at least some of the cows milk having omega-3 fatty acids. A computer network access code is provided to the milk producers for access to a central computer of the principal commercial entity. The computer has stored information memory banks associated with each of the access codes. Feed is provided commensurate with the feed formula to each of the producers and data is stored representative of feed types and quantities delivered to particular ones of the milk producers in the information memory banks of these producers.

Abstract: A fire extinguishing system, particularly, but not exclusively, for use in extinguishing chimney fires. The system comprises a container having a pressurized fire extinguishing product therein. A release nozzle is installed in the chimney flue and has a conduit connecting it to a pressure release valve associated with the container. The valve is operated by a piston member which is connected by a wire cable to a fusible element which melts when the flue attains a predetermined temperature. A tension adjusting device is associated with the wire cable to adjust the tension in the cable and the position of a piston head relative to a trigger element associated with the pressure release valve.