. Electric railway journal . ditions. Power plant engineers have com-plained bitterly of the quality of coal which they arereceiving. Undoubtedly in many instances coal has been sup-plied which, because of its poor quality, has producedan alarming rise in maintenance cost of furnace equip-ment. In some cases, however, the poor quality hasmeant little more than a serious lowering of heatingvalue. It seems to me sometimes that users of high-quality coal grow to be a pampered element in our popu-lation. Barring coal of low heating value which hap-pens also to be characterized by low fusing temper
. Electric railway journal . ditions. Power plant engineers have com-plained bitterly of the quality of coal which they arereceiving. Undoubtedly in many instances coal has been sup-plied which, because of its poor quality, has producedan alarming rise in maintenance cost of furnace equip-ment. In some cases, however, the poor quality hasmeant little more than a serious lowering of heatingvalue. It seems to me sometimes that users of high-quality coal grow to be a pampered element in our popu-lation. Barring coal of low heating value which hap-pens also to be characterized by low fusing tempera-ture of ash, it seems to me to be an open questionwhether something other than very high-quality coal isnot the most suitable for power-plant service. Ofcourse, very high-quality coal is not used in many largepower plants. There is not, in truth, enough of it togo around. Even in normal times the steamship trade Electric Railway Journal 955 r that it shouldreally good coal:h only the rich >metimes heard:it coal to burn,. Dont Lose a Single Out ofBucket of Coal used elsewhere,ed before, is tohat it has beenlot too good forif cheapness iscering qualitiestture. Further,ti has been pro-l in the firemanible through theheat loss up thelis is a verv im- been used in the station and on the stoker in ques-tion. There had been conferences, tests and what notfor a long time in regard to the operation of the equip-ment. The stoker manufacturer sent an expert opera-tor to do his bit. The tests were made long after the stokers had beeninstalled. They included threeseries of tests exactly alike exceptthat during each of the series a dif-ferent man was in charge. Eachman operated with unimpeded con-trol except in one particular, name-ly, that the flue draft was main-tained during each eight-hour testby a man who watched constantly adraft gage connected to the flue noz-zle on the boiler side of the damperand manipulated the damper so asto maintain constant draft. Each series consist
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