Title: Thermal Plasma Parameters from RHESSI Observations Author_list: Dennis, B. R. and Phillips, K. Abstract: Results from the analysis of RHESSI spectral observations using the latest Chianti code will be presented for the events under study in Group 6. The full spectral range will be used, including the iron and iron/nickel line complexes. Estimates will be made of the temperature and emission measure from the continuum, and the iron abundance from the line equivalent widths. Images will be reconstructed over narrow energy bands to determine the extent of the thermal emission in order to estiamte a source area and emitting volume. Uncertainties and difficulties remaining in this analysis will be discussed in detail, and comparisons will be made with observations of the thermal plasma at other wavelengths.