Lesley.] 



84 



[Jan. 15, 



(a) JuntJtioa with Pennsylvania R. R. uear Greensburg, 



XXXI. ToMogheny li. E. 



The elevations on the Yohiogheny R. R. were copied from notes in the 

 possession of Mr. John F. Wolf, Engineer Pennsylvania Gas Coal Co., Irwin's 

 Station, Westmoreland County, Pa. 



The datum is Pennsylvania R. R. at : 



STATIONS. 



Irwin's Stat. P. E. R. (a) I 



Shaft No. 3 



Tunnel 



Chamber's 



McGrew's 



Millgrove . . 



Little Sewickley (6) 



Marchand's (c) 



Yohiogheny (d) 



Sewickley Station (e) 



R. R. Juncticm (/) 



(a) Junction with Pennsylvania II. R. at Irwin's Station. 



(6) First Crossing Little Sewickley Creek. 



(c) Yohiogheny Mine, No. I, Shaft No. 3, elevation of Coal, 720'.4 above Tide. 



(cl) Yohiogheny Mine, No. 2, elevation of Coal 776'. 4 above Tide. 



(e) Mine No. 4, elevation of Coal opening at this point 800'.4 above Tide. 



(/) Junction with Pittsburgh and Connellsville R. R. 



