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(2) the "front end" type which fits into the front end of 

 the engine* 



The Wew York Public Service Commission has issued 

 the following regulations concerning spark arresters for 

 coal burning locomotives in use in the Adirondack Forest 

 Preserve: "Screen to be of square mesh wire netting, or its 

 equivalent, with opening not exceeding the opening in wire 

 neeting Si meshes per linec.1 inch in both directions, made 

 of wire not less than .135 inches in diameter* 



No opening v/ill be permitted at uny place inside 

 of extension front which is larger than the maximum opening 

 specified for wire netting* All Joints must be substantially 

 made end reinforced to prevent strands of wire netting be- 

 coming loose and forming larger than normal openings. 



Particular attention must be given to the fit of 

 spark arrester and plates around steam pipes, exhaust pipe, 

 blower pipes and air pump exhaust pipe (when same is located 

 in extension front). 



The man hole door must have a substantial rigid 

 frame and must be properly fitted and fastened against the 

 main plate of spark arrester. 



Particu3.ar attention must be given to the fit of 

 plates against the flue sheet. 



No openings will be permitted between top of dia- 

 phragm and the front of flue sheet, this joint to be pro- 

 tected by an angle iron of reinforcement." 



Ash pans of engines should be so constructed that 

 they will not drop fire upon the tracks. Exhaust pipes 

 should empty into the ash pan so as to extinguish all fire 



