Complete distributions of all major products and nitrogen species are reported for the oxidative pyrolysis and combustion of premixed suspensions of subbituminous, Pittsburgh No. 8 hvA bituminous, and a low-volatile bituminous coal after 150 ms. As inlet O-2 levels were progressively increased from 0 to 15% in successive tests, the process chemistry moved through oxidative volatiles pyrolysis, volatiles combustion, soot combustion, and char oxidation. However, the different fuel components were consumed sequentially only with the low-volatility coal. Char, soot, and noncondensible fuels burned simultaneously with the subbituminous coal and, to a lesser degree, with the Pittsburgh No. 8, Consequently, hydrocarbon gases from these coals, particularly CH4 and C2H2, were present while most of the char and its residual fuel-N was converted into gases. With all coals, the persistence of gaseous hydrocarbons profoundly affects the conversion of all fuel-N species in the gas phase, As long as detectable amounts of CH4 and C2H2 are present, NO is absent with all coal types and total fixed nitrogen (TFN = HCN + NH3 + NO) is composed of only HCN with both bituminous coals, plus appreciable amounts of NH3 during intermediate stages with the low-rank coal. But after the hydrocarbons are consumed, HCN and NH3 vanish and most of the remaining char-N and soot-N are converted into NO, so TFN is composed of only NO. The extent of carbon conversion up to the NO inception point is the primary coal rank index for early NO production in coal flames, falling from 38% with the subbituminous to 12% with the low-volatility coal.