Published 28th October, 1889
WICKHAM AND BULLOCK ISLAND COAL COMPANY
The Wickham and Bullock Island Coal Company was formed in Sydney in the year 1879 for the purpose of mining coal from two leaseholds - one being the property of Mr Peter Fleming, and the other belonging to the Government. The well-known Throsby's Creek, which is 230 yards broad and 4 feet deep, divided the two estates. A shaft was put down on the first-named leasehold and the Borehole seam found to be 12ft in thickness. The winning of the coal so close to the wharves of Newcastle created a lot of interest in mining circles at the time. The company, some few years after commencing operations, obtained a large area from the Government, and their estate at the present time has an area of 2150 acres. It extends from the harbour basin on the south, to Goat Island, taking in the whole of Bullock Island, now known as Carrington. The western limit is the far side of Throsby's Creek, while the extensive Bullock Island dyke, at which nearly all the coal mined in the district is shipped, forms the eastern boundary. The capital of the company is £110,000, made up of 70,000 shares fully paid up to £1,20,000 preferential shares paid up to 5s, and a like number of contributing shares paid up to 5s. Share are now at a premium of 10s, and the company have recently declared a dividend of 20 per cent.
For some years the company obtained coal from the old Wickham shaft, now leased by them to the Linwood Colliery, and in 1883 commenced to sink a pit in Cowper-street, Carrington, but the authorities ordered the cessation of the work there, a course which resulted in a serious loss, and great inconvenience. About the end of June, 1884, Mr Hugh Walker, with the assistance or Mr Fairley, commenced to sink the present shaft close to the southern side of the Bullock Island railway, just half a mile from the cranes. As in the case of all delta collieries, the work was difficult and extremely laborious, owing to the soft nature of the surface deposits. Iron cylinders, 10ft in diameter, in six segments 3ft in depth, were manufactured by Messrs Morrison and Bearby, the well-known ironfounders, whose premises are close to the colliery, and sunk by pressure to a depth of 173ft, where they rest on the hard rock. These cylinders were the first put down in the district, and are thoroughly water-tight. The total depth of the shaft is 231ft, and it was finished in the short period of eight months. After the 173ft of sand, gravel, and clay had been passed through the cylinders, the strata between it and the seam was found to be entirely of hard rock. The coal at the bottom of the shaft was 18ft 6in in thickness, but only the bottom portion has since been worked.
The easterly heading of the old Wickham Colliery communicates with this mine, but a barrier was left as a boundary to the old Maryville workings. When the shaft was completed an unique system of "winning off" was adopted - the headings being only 6ft wide, while the bords were 6 yards, leaving pillars 8 yards in thickness. In view of the flooding of the Ferndale Colliery, the workings of which were under Throsby's Creek, the precaution was a wise one, and was commended by the Government officials. As much of the estate lies north of the railway, the primary operations were considerably hampered owing to the necessity of driving headings across the railway-line and leaving portions underlying private property. For some time after the colliery started operations, the major portion of the workings were north of the line, but of late the southerly portion has been worked, and at present the south-east heading is half-a-mile from the bottom of the shaft.
The underground haulage obtaining at this colliery is accomplished by the main rope system, with an engine of 15-horse power placed at the surface of the working shaft. The wire rope goes from the drum of the engine down the shaft, and from thence to the end of the main ways on steel rollers. The full skips are thus brought up to the bottom of the shaft, where they are placed on one of the single-decked cages and taken up to the screening floor. The cages only hold one skip at a time, but, notwithstanding that, the capable output is 700 tons per diem. An engine of 40-horse power does the winding, while the necessary gear is of the most recent and improved type. For the year 1886 the output of this colliery was 55,553 tons, valued at £26,229. In 1887 it was 59,553 tons; and in 1888, 68,240 tons. For the first half of the present year over 55,000 tons were raised, while for the month of August last the returns show 19,100 tons, and for September 15,800 tons. The development of the mine has thus been very rapid during the last twelve months, and the trade prospects are very good. At present some 250 miners and 125 wheelers, drivers and shiftmen are employed by the company.
The ventilation of the workings is obtained by a Walker fan, erected at the mouth of an air shaft which was put down 26 chains to the south of the working pit. During the first years of the company's existence the ventilation was given from the old Wickham shaft, now known as the Linwood Colliery, which was put down on Fleming's property, on the other side of Throsby's Creek, but this was abandoned when the present air-shaft was finished. The fan is capable of throwing 50,000 cubic feet of air per minute, and is ample for present requirements. Water is also drawn from the air-shaft by a powerful Tangye pump, worked by a boiler which also supplies power to work the fan.
As before stated, the seam is 18ft 6in thick, but the bottoms only are being worked, the top coal being left for the purpose of forming a safe and reliable roof. The total thickness worked varied from 8ft to 12ft, but eventually the top coal will also be taken down. As much of the land is under water, the pillars can never be worked, and for some time past the mode of working has been chaged to 6-yard pillars and 6-yard bords. The seam dips slightly to the south-east, and a recent analysis of the coal gives the following results: Moisture 3.2 per cent, volatile hydro-carbons 35.6, fixed carbon 60.1, ash 1.1, and a trace of sulphur.
Being so close to the wharves the cost of haulage is reduced to a minimum, and is done by the Government at a low rate. The company have 138 steel hopper waggons, and are now obtaining a further supply of 100. A branch line goes under the colliery shed, and the coal, after passing over the usual sloping parallel iron bar screens which separate the small, goes on to the waggons beneath.
