Show joint convention of operators and miners to adjust wage scale indianapolis ind president thorn thom as L lewis of 0 the united mine work af ers stated on friday positively that there would be a joint convention be tween the miners and operators for the file districts of western pennsylvania ohio indiana and illinois for the pur P pose ose of rehabilitating the interstate wage agreement in the central corn com peti tive fields it Is upon the wage scale in this field that the scales in other fields are based |