780 GEOLOGY OF OHIO. 
to hold the coal. But two mines are now worked, and these in a small 
way, producing from 30 to 60 tons a day, mainly to meet the local 
demand. The coal averages 4 feet in thickness, where worked. The 
direction of the faces or main joints is N. 35° E. A considerable 
proportion of the product is red or weathered coal. The quality of the 
coal that is left is not equal in all respects to that of the larger deposits. 
Its average composition can be seen by the following analysis 
(sampled by F. Keffer) :. 
Analysis of Tallmadge Coal (Lord). 
Moisture s ciaig b Steaua Gbwie ike Sr Se a clarmalee ee Helos Se SPOON SR Sea ST Oe RS TOTES eee ene 5.33 
Volatilecombustiblenmattentcncrsccrerearce ree eee 37.92 
Fixed Carbo: hee eis v dee See aCe ee EE RE 5.40 
U.N) 0 NAAR OR SE eRe TA Ren See are H Sone, Sere Tt  sonbosobos 5.35 
PO tal oes decasieshodeticae esc Me te eee oe ee Re OE EE en 100.00 
Sulphur. 4 cccdicastehsdecccesbecemocsdecnsesecs concen eran serene see aercomemeemeene 1.85 
6. Akron District, Springfield and Coventry Township. 
The Middlebury shaft, operated by Payne, Newton & Co., of 
Cleveland, is one of the largest and best known mines of the district. 
Its average daily output is about 200 tons. The coal exists as an un- 
divided seam, with a maximum thickness of 5 feet. It is worked down 
to 23 feet. The average of the worked areas is 44 teet. About 200 
acres have been mined out, and the acreage tributary to the mine will 
soon be exhausted. The roof is black slate or sandstone, and the two 
elements occur in nearly equal proportion. The shale is, of course, the 
more desirable cover. The largest use of the coal is for house fuel, but 
it is also used in generating steam, and to a small extent as a furnace 
coal. 
The average composition is shown in the following analysis 
(sampled by FI. Keffer) : 
Analysis of Middlebury Shaft Coal (Lord). 
Ii Woyt:) nu 0 9 > peenr RED aRnee mR ER a Ham Oe ene en SBA Nara Aadidciacd cadena nbocuachoos00e 4.72 
Volatile combustible matter .............. Parr enn La Re See Lard ik 38.10 
BEKO! CAPDOM sss ieee ee Rea EE ee ee TR 52.78 
DU 0 Re a rn Rene et Slee URE RENT ee cle AP eh Abe badcobmoOe: 4.40 
Totaltaiee eck ok RS RE oe ay toca naan cee oeon ene 100.00 
