Nelson Provincial Gazette – 1866 – No. 16

Page 66

✨ Coal trial statistics



TABLES COMPILED FROM FOREGOING REPORTS.

TABLE I.

Result of Trials of the Quality of COAL from the Grey and Buller, compared with North of England, Welsh, and New South Wales Coal.
(All trials have been made at Woolwich Dockyard.)

Kind of Coal. Date of trial. Width of Bars. lbs Water evaporated by 1lb Coal, at a temperature of 100° feed water. Cubic feet Water evaporated per hour, at a constant temp. of 100° feed water. Per centage of
Clinker. Ash. Ash and Clinker
* Average North of England ... ... ... 8·25 47·00 1·00 4·00 5·00
North of England... (Mean of 10 trials.) ... ... 8·72 50·32 2·17 3·71 5·89
Welsh ... (Mean of 10 trials.) ... ... 9·11 47·75 1·94 4·22 6·16
* New South Wales (Eleven different kinds.) ... ... 8·298 46·785 2·11 7·15 9·26
Grey— In Boxes, dead small taken out Worst result ... 1865 November 17 ½ inch 9·00 39·19 ·53 4·32 4·86
Best result ... December 4 ½ inch 9·90 45·25 ·27 3·10 3·37
MEAN of 4 trials ... ... ½ & ⅜ in. 9·46 42·76 ·35 3·25 3·60
† Grey— In Bags, dead small— Not stoked ... 1866 January 12 ... ⅜ inch 9·46 40·36 ·66 3·35 4·01
Not stoked ... January 13 ... ⅜ inch 9·46 43·24 ·80 3·85 4·65
MEAN ... ... ⅜ inch 9·46 41·80 ·73 3·60 4·33
Stoked ... January 15 ... ⅜ inch 9·40 44·58 ·71 3·60 4·31
Stoked ... January 17 ... ⅜ inch 9·36 43·99 ·84 3·60 4·44
Stoked ... January 18 ... ⅜ inch 9·46 44·87 ·52 3·10 3·62
MEAN ... ... ⅜ inch 9·42 44·48 ·69 3·43 4·12
GENERAL AVERAGE ... ... ½ & ⅜ in. 9·43 43·05 ·61 3·52 4·13
‡ Buller ... (One trial.) 1865 December 13 ⅜ inch 9·83 43·92 ·91 3·30 4·21
  • From a Woolwich Report, May 1st, 1862, published in the 'Sydney Morning Herald,' 20th September, 1862, and republished in Mr. Burnett's Report on the Coal-field of New South Wales (Nelson Government Gazette, 21st February, 1865).
    † The Grey coal in bags was sent to England by mistake; it was the dead small taken out when the boxes were packed. It shows satisfactorily that even the dead small of this coal is nearly as good as any part of it.
    ‡ The reason there was only one trial of Buller coal is, that, owing to the difficulty of conveying it from the seam to the port without roads, only two tons were sent to England.


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✨ LLM interpretation of page content

🌾 Mr. Trickett's additional trials of New Zealand coal (continued from previous page)

🌾 Primary Industries & Resources
23 January 1866
Coal, New Zealand, Woolwich Dockyard, Experiments, Comparative statement, Grey Coal, Buller Coal, North Country Coal, Welsh Coal