And the boiler room men really went through the motions from time to time of blowing the soot from the tubes. They didna#39;t do the job properly at any time. Probably the nasty features of the work had something to do with the slovenliness of its performance, To clean off soot properly all of it ... There is mighty little of real fuel value in black smoke, probably not to exceed 2 per cent of the fuel at the exShowinganbsp;...
|Title||:||How to Build Up Furnace Efficiency|
|Author||:||Joseph Weller Hays|