the primary fuel path 42 is preferably fluidly connected to an annulus 47 defined by the burner nozzle 46 positioned in the internal cavity 13 defined by the main burner body 22 the secondary fuel path 44 is preferably fluidly connected to a fuel orifice 48 also defined by the burner nozzle 46 the primary fuel 38 exits the burner nozzle 46 through the annulus 47 into the combustion tunnel 52 at a low velocity ideally less then 100 feet second 30 meters second depending on rated input the secondary fuel 40 passes down the secondary fuel path 44 and exits into the combustion tunnel 52 through fuel orifice 48 preferably accelerated to a velocity approximately greater than 350 feet second 107 meters second depending on rated input as shown in fig3 the fuel annulus 47 preferably has a first width w 1 and the fuel orifice 48 preferably has a second width w 2 with the first width w 1 of the fuel annulus 47 being less than the second width w 2 of the fuel orifice 48 referring again to fig2 the velocities of the primary and the secondary fuels 38 40 exiting the annulus 47 and the fuel orifice 48 of the burner nozzle 46 will depend on the velocity of the primary air 24 exiting the primary air orifice or orifices 32 the primary fuel 38 exiting the annulus 47 mixes in a highly turbulent region with the primary air 24 exiting the primary air orifice or orifices 32 creating a highly reducing combustion region within the combustion tunnel 52 the secondary fuel 40 exiting the fuel orifice 48 is accelerated to the point that there is.