380 COALFIELDS AND COLLIERIES OF AUSTRALIA. 



This plant works an Sin. Cornish, lift of punips on a 6ft. 

 stroke. The plant is much ahead of present requirements, 

 but is calculated to deal with any unexpected inrush of water. 



A Cornish boiler, 30ft. long, and 6-ift. in diameter, sup- 

 plies steam for the pumping plant. 



J^os. 3 and 5 main shafts are so far the two principle wind- 

 ing shafts, and are dealing with the present output of 2000 

 tons per day. 



Two shafts, Nos. 9 and 10, are now being sunk. They 

 will be about 300ft. in depth when completed, and will jointly 

 tap an area estimated to contain 4i millions tons of coal. 



These shafts are 14ift. by 12ft. in the clear, and will be 

 fitted up with cages holding two skips set tandem. As it is 

 anticipated that heavy surface water from, the surrounding 



State Coal Mine, Powlett River. 



swamps may ultimately find its way into the underground 

 workings, that contingency has been guarded against by in- 

 stalling a heavy set of Cornish pumps, capable of dealing with 

 500,000 gallons of water per day. 



The pumping gear and bob are set on massive concrete 

 foundations, and connected to a 22in. cylinder engine having a 

 5ft. stroke. 



