204 - ANNUAL REPORT 
proper. Two small Berea wells are found on the Mann farm in the 
southern half of section 5. 
The Maxton sand, which lies just above the “Big lime,” has a thick- | 
ness commonly ranging from 15 to 30 feet. This is divided into two 
parts by a bed of slate. Neither of these produce oil or gas in commercial 
quantities, but when either is reported it is from the upper bed. The “Big 
lime” or Mountain limestone is from 60 to 100 feet thick, is free from beds 
of sand and void of oil or gas. The Keener sand does not lie immediately 
below the “Big lime,” but is separated from it by a “break” or bed of 
slate, having commonly a thickness of 15 feet. The sand rock under con- 
sideration varies considerably in thickness, ranging ordinarily from 15 to 
60 feet, with the average of these two figures representing the common 
thickness. The sand is reported pebbly at the top, but the lower part, in- 
cluding the pay, is finer. This character of the producing rock is doubt- 
less responsible for the poor showing of the wells before they are shot, and 
was the cause of 5 years’ delay in opening the field. In view of develop- 
ments in 1900 it seems certain that had the early wells drilled on the Dela- 
plaine farm been shot they would not have been recorded as failures. The 
Big Injun sand proper, which lies about 20 feet below the Keener, from 
which it is separated by a bed of slate, has ordinarily a thickness approx- 
imating 125 feet, but there are marked variations from this figure. Lying 
from 6 to 10 feet below the Big Injun is another sand, known as the 
Squaw, a name applied to a producing sand in West Virginia by the 
drillers of that state. A generalized section of these formations in the 
Graysville field is as follows: 
Max CONC ATT ey hele aie icon eee eas eee ae 15 to 30 feet 
Mountain limestone (“Big Lime’)...... 60 to 100 feet 
Slate! (sneaky ce Wart aed cea see ke cea ine 10 to 20 feet 
Keenerasan daiers sct. weacteiaeun aontrs Sirah eats 15 to 60 feet 
Slate CDReaksa) aca users Ge cae ene. oid eee 5 to 25 feet 
Big JInjunpLODENs basen eer ee Oe 100 to 150 feet 
plate (“Drea kei eee ire corer ase ener rae 6 to 10 feet 
SCULAW = SL NGI Ae Pe Pe or Mra oar na emu 8 to 30 feet 
As shown by the records previously given, the interval between 
the top of the Keener sand and Berea grit is about 550 feet. Well No. 16 
on the Delaplaine farm is said to have reached a depth of 2,367 feet, the 
objective point being the Gordon sand, but the search was a failure. 
Oil and Gas,—The field, like the neighboring one of Jackson Ridge, 
produces little gas. The supply, in fact, has been so small that it was not 
adequate for exploring the territory, and accordingly the driller has been 
compelled to rely on coal or on gas derived from another field. The wells 
are not heavy producers of oil, the largest having started at approximately 
100 barrels per day. The field has not yet been operated sufficiently long 
