954 GEOLOGY OF OHIO. 
FIGURE EX 
STRUCTURE OF COAL IN MINE N85 OF 
Gah C41 C$.. TROY MINE STRAITSVILLE 
SSS A Ge UMS oi SAME Dara 7 
Whine SS abe. Ey at et go aoa Aged 
OS Cha be te Be a ed A ae 
Bare Cook 2 ray aoe 
! 
Coa an eee | 
{ 
Sobt. Coo ae a eee K A 
huvge S Lowe 2.8 Uses vee : 7 
COO NE Be Us ue Ce ae : 
So SVarcebe et ay nue | 
: 1 
G eyelid ted Ta ol eae | 
i A 
if i ar aa WN 2’ 
of which it forms about one-third, and it agrees in all respects with the 
coal already described. There are probably 50 acres of coal left in 
this property, which has just passed into the hands of the Columbus 
and Hocking Coal and Iron Company. Its coal, except, of course, 
near the outcrop, has as good a reputation as any coal in the field. 
Passing to the southward, from the Troy mine, the first mining 
property to be reached is, that known as the Straitsville Central 
Mining Company, now known as mine No. 7, of the Columbus and 
Hocking Coal and [ron Company. The property originally included 
about 600 acres of coal land. ‘The character of the coal agrees with 
that of the Troy mine in all respects. This is the only Straitsville 
mine in which machines are used upon the coal. The Lechner machine 
was introduced here early, and its work has been very satisfactory. 
The new machine, especially, is very effective and rapid. Four 
machines are now employed in the mine, and a large percentage of the 
coal is produced by them. | 
The coal of the Straitsville Central mine has the composition 
shown below. The whole seam was sampled in an average room : 
