TY - RPRT TI - Slag characterization : viscosity of synthetic coal slag in steam AU - Brower, W S AU - Waring, J L AU - Blackburn, D H PY - 1980 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 80-2124 DO - 10.6028/NBS.IR.80-2124 ER -