DUDLEY COLLIERY. 30o 



stroke; the brake is worked by foot. The drums are conical 

 not spiral being 12ft. and 13Jft. in diameter. The drums 

 are lagged with tallow wood, which has been previously 

 treated for three years by painting it over with a mixture of 

 sea-water and blue oil about once a week, until it is so hard 

 that an adze will hardly touch it. The engine driver is so 

 situated that he has a good view of the shaft, and the windows 

 of the engine-house are placed so high that the driver's at- 

 tention cannot be distracted by watching anything that is going 

 on outside. There are four Cornish boilers coupled up to- 

 gether. The feed water is heated by pumping it into a 

 vessel into which the exhaust steam is led. 



The coal is weighed on Avery weighing machines, cap- 

 able of weighing two tons. There are two jockeys on the 

 beam ; one for the tare, the other for adjusting the weight. 

 The coal is tipped from an end tippler on to stationary screens. 

 There are two gates attached to a lever, for easing the coal 

 down on to the picking belt after a skip full has been tipped 

 on to a screen. 



Bur wood Colliery. 



This colliery originally belonged to the Burwood Coal 

 Company, who started sending coal to market in 1885 

 from the old pit, and continued mining operations till 1894, 

 when the Scottish Australian Mining Company took posses- 

 sion. It is now under the management of Mr. E. H. L. Crou- 

 dace, who has been in charge since 1896. 



The borehole seam is worked at this colliery, which to 

 the north of the estate has the following section, commencing 

 at the top: 



Coal 2ft. Sin. 



Band lin. 



Coal 2ft. Gin. 



Band lin. 



Coal 1ft. lin. 



"Mogan" 4in. to 8in. 



Four-inch Coal 6in. to Sin. 



Band lin. to 2in. 



Little tops Coals Sin. to 12in. 



"Jerry" 3ft. to 4ft. 



Sandstone 



To the south of the estate the section is 



Coal 2ft. 6in. 



Band lin. 



Coal 2ft. 4in. 



Band lin. 



Coal 1ft. Oin. 



below which there is nothing of commercial value. 



