167 
workable — an opinion that a very moderate amount of 
geological knowledge would have shown to be without 
foundation. The shaft was continued down to a depth of 
46 yards, when the water found in the limestone stopped 
operations for a while. The second shaft was then com- 
menced, which reached, at a depth of 360 yards, in the year 
1835, the Maudlin Seam, which was found of an inferior 
quahty. 
The sinking of the first shaft was resumed in 1841 and 
continued to a depth of 160 yards, from which point a 
drift was driven to the coal reached in the second shaft. 
The seam of coal referred to was then worked for some 
years, after which the Hutton Seam was sunk to, and 
reached in 1869 at the depth of 550 yards. 
You will thus see, that for nearly half a century the pro- 
prietors and managers of this colliery, struggled bravely 
against difficulties of the most serious character before they 
attained the reward which their energy so richly merited. 
(3) DEEP BORE-HOLES. 
As boring bears such an intimate relationship to the 
extension of mining operations, I shall now give a list of 
the deepest bore-holes of which there is any record : — 
No. 
Name of Boring. 
Situation. 
Country. 
Depth 
in Yards. 
1 
2 
Aitesian Spring 
Rock Salt Bore-hole 
Potsdam ... 
Sperenberg 
Missouri ... 
( nr. Berlin ) 
\ Prussia ) 
1,833 
1,392 
3 
4 
5 
0 
7 
Boring for Coal 
Boring in progress for ) 
Coal, reached up to the > 
present time ) 
Boring for Minerals by ) 
the Ed en Valley Mining !■ 
Company ) 
Swinderby 
Sub Wealden 
Creusiton ... 
Scarle, nr. 
Lincoln 
lulen Valley, 
Cumberland 
Nr. Lincoln 
Suffolk ... 
France 
England ... 
England ... 
England ... 
England .. 
1,007 
700 
760 
6()0 
635 
8 
Artesian Well 
Gunelle, nr. 
Paris 
France 
599 
