BOILER No. 60. 



Boiler No. 60 consists of a 

 plant of two vertical boilers, 

 the general features of which 

 are shown in elevation in the 

 folio win cut. These boilers 



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are of the fire box type and 

 they contain a large area of 

 heating surface, the propor- 

 tion of which to grate surface 

 is 60.2 to 1. One quarter of 

 this surface is steam heating 

 surface. There is no brick 

 work about the setting, except 

 the brick ash pit which sup- 

 ports the boiler. The outside 

 of the shell is protected by a 

 covering of asbestos board and 

 hair felting. The interior 

 surfaces of the boiler were 

 free from scale. 



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TION AND SECTION. 



