CORRIMAL-BALGOWNIE COLLIERIES. 



215 



The only wear or strain to which they are subject is during 

 the brief period of actual weighing. The great saving of time 

 and space as also the accuracy with which the weighing is 

 carried out, is so patent to those who have occasion to handle 

 large weights, that this type of machine has practically super- 

 seded the old beam scale formerly employed for this class of 

 work. The tare of a number of empties having been found, 

 and the average struck, the steelyard is so weighted that when 

 an empty skip is on the platform, the index reads zero ; con- 

 sequently, when a full skip is weighed, only the actual weight 

 of coal is indicated, which can be at once noted down without 

 anv calculation. 



Fig. 138. Australian Coal Works. 



The electric plant consists of a Westinghouse shunt-wound 

 direct current generator of 7kw. 31 amp. 225 E.M.F., full load 

 speed 1350. It drives two electric pumps, and also furnishes 

 some light. One pump is a reciprocating geared pump. The 

 other is n Quiinby screw pump. 



The Australian Coke Company. 



These works are located at Unanderra, and are under the 

 charge of Mr. Walter Evans. The coal for coking purposes 

 is obtained from the Corrimal Balgownie Collieries. There 



