An improved method for producing paper from pulp includes a plurality of subassemblies arranged in the forming or wet section of a Fourdrinier. The fan wheel is driven, at least in a predetermined time period in the production cycle, at a fan wheel speed, which in addition to a rotary drive speed component is comprised of an oscillating speed component. A global positioning system receiver in the apparatus processes GPS signals received from GPS satellites to generate location data indicative of the location of the apparatus. The plug head defines stepped first, second and third ramps, each ramp having a truncated conical shape of equal half-angle with the conical sealing surface half-angle being larger than the ramp half-angle.