COAL MINES OF NORTHERN PERRY COUNTY. 895 
PUiGUO IRAE WARY. 
STRUCTURE OF LOWER KITTANNING COAL, (No. 5.) 
AT REDFIELD. 
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The composition of the seam at this point is somewliat below its 
best phases, so far as can be judged by a single analysis of hastily 
‘selected samples. 
Mining is begun at Straitsville prices, but Lechner machines are to 
be introduced at once, by which the seam can be more economically 
handled. Rooms are worked 18 feet wide, and pillars of 10 feet are 
left. The room roads are run along side of the rib to make the final 
-drawing easier. The face and ends lie nearly to the cardinal points. 
The end joints are much closer and less regular than the face. The coal 
requires about 1 keg of powder to 50 tons. It mines in fair sized blocks, 
and has good strength. It is being introduced as a domestic coal. 
There is a large acreage in this field. It seems certain to prove one of 
the most important basins of Lower Kittanning coal in the State. 
The Middle Kittanning coal is opened also by the company at the 
same point. The coal is in all respects regular and characteristic. Its 
structure is shown in the following diagram: (See page 896.) 
There is a large and well proved acreage of this seam tributary to 
the railroad. It can be counted upon to supply 42 to 46 inches of coal 
-of good quality, especially for steam production. 
In the northern portion of Section 26, on the land of Bernard 
