194 THE miners' friend. 



it vvill be a means of making our Mining Trade, which is no 

 small part of the Wealth, of this Kingdom, double, if not treble 

 to what it now is. And if such vast Quantities of Lead, Tin, 

 and Coals are now yearly exported, under the Difficulties of 

 such an immense Charge and Pains as the Miners, &c are now 

 at to Discharge their water, how much more may be hereafter 

 Exported, when the Charge will be very much lessen' d by the 

 Use of this Engine, every way fitted for the Use of Mines ? 

 For the far greater part of our richest Mines and Coal-Pits, 

 are liable to two grand Inconveniencies, and thereby rendred 

 useless; viz. The Eruption and Excess of Subterranious 

 Waters, as not being worth the Expence of Draining them by 

 the great Charge of Horses, or hand Labour. Or secondly, 

 Fatal Damps, by which many are struck blind, lame, or dead 

 in these Subterraneous Cavities, if the Mine is wanting of a 

 due Circulation of Air. Now both these Inconveniencies are 

 naturally remedied by the ivork of this Engine of raising water 

 by the impellant Force of FIEE. 



For the IVater. Be the Mine never so deep, each Engine 

 working it 60, 70, or 80 foot high, by applying or setting 

 the Engines one over another, as shall be shew'd at large 

 hereafter in the following Pages, you may by a sufficient 

 number of Engines keep the bottom of any Mine dry ; and 

 when once you know how large your Feeder or Spring is, it 

 is very easie to know what siz'd Engine, or what number of 

 Engines will do your business. 



The Coals used in this Engine is of as little value, as the 

 Coals commonly burned on the Mouths of the Coal-Pits are : 

 For an Engitic of a three Inch-bore, or thereabout, ivorhing 

 the Water up ^0 foot high, requires a Fire-place of not above 

 twenty Inches deep, and ?ihovX fourteen or ^i^f^^i Inches wide, 

 which will occasion so small a Consumption, that in a Coal- 

 Pit it is of no account, as we have Experienced. And in all 

 parts of England where there are Mines ; Coals are so cheap, 

 that the Charge of them is not to be mentioned, when we 

 consider the vast quantity of Water raised, by the inconsider- 

 able value of the Coals used and burnt in so small a Furnace. 

 What the quantity of Coals used for one Engine in a year 



