WELL LOGS USED FOR BURGETTSTOWN CONVERGENCE SHEET. 147 
point is at an elevation of 1,080 feet, or 57 feet above the mouth of 
the well. 
Log of K. N. McDonald icell No. lJ t (No. 662). 
Top. 
Bottom. 
Sand, Gordon. 
Feet. 
9 OQfi 
Feet. 
9 117 
Sand, Fifth. 
9 222 
9 999 
Total depth. 
w , *— o «_< 
2,255 
._ 
The distance between the Hundred-foot sand and the Pittsburg 
coal at this point is therefore 2,008 feet less 210 feet for the interval 
between the Gordon and Hundred-foot sands, plus 57 feet for the 
distance of the Avell mouth below the coal, or 1,042 feet. 
II ell No. 906 .—This is well No. 30 on the farm of K. N. McDonald, 
and its mouth is at an elevation of 1,047 feet. The Pittsburg coal 
outcrops in the vicinity at an elevation of 1,077 feet, or 37 feet above 
the mouth. 
Log of K. N. McDonald icell No. 36 (No. 906). 
Top. 
Bottom. 
Sand, Gordon. 
Feet. 
2,120 
Feet. 
2,142 
2,148 
Total depth. 
The distance between the Hundred-foot sand and the Pittsburg coal 
at this point is therefore 2,120 feet, less 210 feet for the interval 
between the Gordon and Hundred-foot sands, plus 30 feet for the 
distance of the Pittsburg coal above the well mouth, or 1,940 feet. 
Well No. 67If .—This well is No. 11 on the farm of Ed. McDonald. 
Its mouth is at an elevation of 1,006 feet above sea level. The 
Pittsburg coal at this point is at an elevation of 1,038 feet, or 32 feet 
above the month of the well. 
Log of Ed. McDonald well No. 11 (No. 671). 
Top. 
Bottom. 
Sand Gordon. 
Feet. 
2,098 
2,100 
Feet. 
2,116 
Sand,pay . 
Total depth. 
2,132 
The distance between the Hundred-foot sand and the Pittsburg 
coal at this point is therefore 2,098 feet, less 210 feet for the interval 
between the Gordon and Hundred-foot sands, plus 32 feet for the 
distance of the Pittsburg coal above the well mouth, or 1,920 feet. 
