Abstract: Continuously produced algae is seeded into the waste streams by the use of 4 or more photo bio-reactors. The algae so produced manufacture oils and fats inside their cells from nutrients in the waste and the process of photosynthesis. Their growth is enhanced by the use of screens, both fixed and movable. These algae adhere to the screens or to the long chain algae attached there to. Algae removed from the raceway bio-reactor are killed by repeated application of heavy rollers over leveled out extracted algae cells. The dead algae are covered with recycled process waste water which goes to one of more oil/water separators and then to storage tanks that contain bio-diesel oil fraction, to waste water tanks and to storage bins for solid waste dead cell material removed.

Abstract: In the manufacture of metal packaging cans metal sheet is deep-drawn and ironed to form a seamless tube having a bottom in one-piece therewith, and the tube is cut transversely to remove excess material at the end remote from the bottom. This forms a cylindrical body and bottom of a two-piece can. To minimize waste of material and to make possible the manufacture of a thin-walled three-piece can, the method includes cutting the deep-drawn and ironed tube transversely at at least one location intermediate the bottom and the end remote from the bottom so that, from the tube, there are formed a cylindrical body and bottom of a two-piece can and at least one cylindrical body of a three-piece can. Suitably, the tube is shaped by the deep-drawing and ironing so as to have a lesser wall-thickness at regions corresponding to the sidewalls of the cans and a greater wall-thickness at regions which correspond to the flange portions of the cans.

Abstract: A method of producing a metal can or similar object by drawing and ironing wherein subsequent to the drawing process the edge of the can or object is cut to size, while the can or object is rotated about its longitudinal axis, by means of a laser beam whereby the deformation properties of the edge are improved.