96 GEOLOGICAL SURVEY OF ALABAMA. 
with the fault that separates the Overturned Measures from 
the Montevallo and the Dailey Creek basins ; there are other 
ridges of lesser prominence between the outcrops of the 
seamsjand following parallel with them, but they are not so 
contiftious as the Conglomerate ridge near the north edge 
of the Overturned Measures. 
"The principal wagon roads in the Overturned Measures 
are as follows: the road leading from Montevallo to the old 
shaft ; the road leading from the Irish Pit to Thompson’s 
Mill; the road leading from the Irish Pit to Peter’s Mines ; 
the road leading from Pea Ridge to Potts’ Tan Yard and to 
Peter’s Mines ; the road leading from the Rainey slope to 
Montevallo; the road leading from Berea Church to the 
Brierfield Coal and Iron Company’s Smelting Furnace. 
Of railroads in the Overturned Measures the Brierfield 
Coal and Iron Company’s Branch Railroad runs through a 
portion, connecting the company’s coal mines, (known in the 
neighborhood as Peter’s Mines), with the East Tennessee, 
Virginia and Georgia railroad ; the Brierfield, Blocton, and 
Birmingham railroad runs along the east end of the Over- 
turned Measures; the branch railroad of the Montevallo 
Coal and Transportation company also runs through a por- 
tion of the East end of the Overturned Measures, connect- 
ing their slope in the Montevallo seam with the Brierfield, 
Blocton, and Birmingham Railroad. 
Twenty-nine years ago a branch railroad extending from 
* what is now called Birmingham Junction Depot, out to the 
“old office,’ and from there was connected by tram-road 
with the “old shaft” or slope in one of the Overturned 
seams. The tram-road and a portion of said branch rail- 
road are now abandoned. 
The Overturned Measures are ten anda quarter (104) 
miles in length by an average width of about one mile; the 
surface area is ten and a quarter square miles. 
The amount of workable coal in seams of two feet and 
upwards in thickness in the Overturned Measures, is. 
167,000,000 of tons (of 2,000 pounds) with a vertical depth . 
of 4,500 feet. 
The conglomerate and the seams outcropping immedi- 
ately south of it, viz: the Dodd seam, Cooper, Shaft, Beebee 
