200 THE miners' ebiend. 



Miner. Then Sir, which way will you go to ivorlc with 

 your Engine to clear an Old Work full of Water. 



Author. Why Sir, to deal plainly with you, if your 

 Shafts are, or may be cut streight, your Tub-Engines^ or 

 Chain Pumps, may draw forth the Water. And the Charge 

 in that respect is not to he accounted for ; because no Iline 

 would be thrown up or neglected, but on account of the 

 Feeders or Springs, which being certain, and constantly to be 

 carried off Winter and Summer. The prospect of being 

 likely to succeed, makes your Mine worth working or 

 emptying, within twenty foot of the Bottom, if ever they 

 were worth sinking, though you worTc or Brain by the 

 common way of Tiibs or Chain-Pumps. And could the con- 

 stant Charge of those Engines be afforded, Numiers of them 

 will Empty and keep under any Work ; but it is the constant 

 Charge of carrying off what the Springs bring in, is the 

 chief thing to be considered in the Business of Mines, which 

 constant Charge is what we lessen very much by this Engine 

 of mine. 



Miner. What signifies your Engine then, Sir, if it be not 

 capable of Sinking or Forking an Old Mine. 



Author Hold my good Friend, a little patience ; I have 

 dealt plainly and impartially with you about the Use of your 

 Old Engines : And for my Engine, it will clear an Old loorTi^ 

 if full of water, as readily as your Tul- Gins or Chain-Pumps, 

 provided the Shafts are good. The Method I propose to 

 Clear an Old Mine, if fifty foot deep, and full of loater, the 

 Feeders not above two Inch-bore, which is done at a very 

 small Charge after this manner ; viz. I fix my Engine on the 

 top of the Mine, and only suck and deliver a 3J Inch-bore ; 

 as soon as we have sunk the Water as far as our Suction will 

 go, which will be fome 22, 24, or 26 foot deep below the 

 Surface. There I make a Room fit to receive another 

 Engine, which I fix with his Force-Pipe to go up to the top 

 of the Pit; and when I have sunk about 24, or 26 foot more: 

 Then I fix a smaller Engine of two Inches-bore, which 

 sucking twenty, axid. forcing forty, does your work, and keeps 

 all safe : Or let your small Engins be kept at Work, while 

 you remove the larger Engine from the top to the middle 



