Abstract: A device adapted to clean well screens and to open aquifer formations including high pressure water jets directed at the formation through the screen and including a pumping device to extract the water forced from the jets and to create turbulence to cause washing action, and the method of cleaning the screen comprising directing jets of water through the screen and causing a turbulent washing action by which the screen is washed.

Abstract: A device for controlling the flow through a suction pump to prevent loss of prime usable especially in narrow ditches and similar smaller areas, and consisting principally of a float controlled valve adapted to regulate the flow of fluid into the pump. The entire device is enclosed is a cylindrical casing adapted to be placed in a relatively small hole.

Abstract: A hot gaseous fluid of low ash content, suitable for use in open-cycle MHD (magnetohydrodynamic) power generation, is produced by means of a three-stage process comprising (1) partial combustion of a fossil fuel to produce a hot gaseous product comprising CO.sub.2 CO, and H.sub.2 O, (2) reformation of the gaseous product from stage (1) by means of a fluidized char bed, whereby CO.sub.2 and H.sub.2 O are converted to CO and H.sub.2, and (3) combustion of CO and H.sub.2 from stage (2) to produce a low ash-content fluid (flue gas) comprising CO.sub.2 and H.sub.2 O and having a temperature of about 4000.degree. to 5000.degree.F.