Mines and Mineral Statistics. 
207 
SUPPLEMENTARY REPORT. 
(Bj John Mackenzie, F.G-.S., Examiner of Coal Fields, New South Wales.) 
The Examiner of Coal Fields reports as follows : — 
I now have the honor to submit to you my Supplementary 
Eeport, accompanied by ten vertical sections of the upper coal 
measures, a plan to a small scale showiiig the boundary and 
extent of the Xew South Wales Coal Fields, as far as I have 
examined it, with the places where the different sections were 
measured shown thereon. Two longitudinal sections, one for 
exhibition purposes, and the other to accompany this report, of 
provings across our lower coal measures by the Australian Agri- 
cultural Company, at Stroud, in the County of Gloucester, and 
six diagrams, to be lithographed for Exhibition purposes, showing 
the character, thiclcness, and portion mined out of the seams of 
coal worked at the different collieries ; also four plans, showing 
the locality of the different collieries now at work in the Northern, 
Southern, and Western Districts. 
Newcastle Haubour, and its eacilittes for shipniext. 
Newcastle, the trade of which is second only to tliat of Sydney, 
owes its great commercial importance to the different coal mines 
which have been opened out close to and within 32 miles of the 
harbour. 
The Government coal wharf is 2,400 feet in length, and 24 feet 
6 inches in width, and eight cranes are used for shipping the 
coal, three cranes, said to be capable of shipping 400 tons each in 
twelve hours, one of 600 tons in t^velve hours, and four of 1 ,000 
tons each in twelve hours. Or 7,600 tons of coal can be shipped 
in twelve hours into ships of the collier class, which do not 
require trimming, and alterations are now being made ; four of 
the first mentioned and oldest cranes on the wharf are being 
removed, and replaced with three 15-ton cranes capable of ship- 
ping 1,000 tons each in twelve hours, and the distance betAveen the 
cranes has been increased, thus admitting larger vessels to be 
berthed. 
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