642 THE COLLIERY GUARDIAN. March 28, 1913. down a further 20 mills, whilst in another works in the same neighbourhood they were said to be adding 20 mills; in short, there were at the present moment almost 100 mills, either in course of erection or projected, in one European country alone. Needless to say, these works were to take care, firstly, of their own home con- sumption, now mostly supplied by England, but owing to the tariff wall, many thinkers anticipated an additional competition was being created for the neutral markets of the world, and instanced the strides made by the United States of America which had now out- stripped English production and whose competition in the tin-plate market of the world had largely contri- buted to the present bad state in the English tin-plate trade. In the discussion, Mr. F. W. Gilbertson, of Pontardawe, said the history of the tin-plate trade up to now had been one rather of individual effort, and had been characterised by a considerable amount of want of confidence and even suspicion among the various manufacturers. After what they had heard from the author of the paper, however, of the really extraordinary and serious competition of America and Germany, he thought they would do well to believe that the old system had gone, and that where opportunity offered of helping each other they should take advantage of it. They ought to be particularly thankful to Mr. Thomas for making the first move towards securing some co-operation among manufacturers. It was a great disappointment to many of them that the proposal of Messrs. Richard Thomas and Co., for an organised restriction of output did not find acceptance—not so much, perhaps, for the immediate benefit of the trade as that it might lead to a better understanding and greater co-operation than had obtained in the past. As a manager of works, he must say he was rather suspicious of engineers—a feeling that he believed was more or less shared by other tin-plate managers. The economy of |d. or the fraction of a penny per box by the adoption of some new device was not, in their opinion, very often worth so much trouble as a careful buying and selling, a careful watching of the manufacture, the prevention of waste, &c.; but, of course, now that competition was becoming more and more keen, it behoved them to look to every possible means of economising. He next dealt with one or two points in the paper, and incidentally mentioned that some years ago he proposed to roll a certain size of sheet by a method employed in America, which meant that more men would be employed in a mill than was customary in this country ; and it was suggested to the workmen that the wages of the extra helpers that were necessary should be partly borne by them and partly by the firm. The men, however, would not hear of it, although the adoption of the method would have meant an increased output—and therefore their wages—by from 30 to 40 per cent. The time must come, if the tin-plate industry was to be preserved in this country, when the workmen must follow the example of their more enterprising brothers and cousins in America. Dealing with gas engines, Mr. Thomas spoke of their being handicapped by the use of coal containing very large quantities of tarry matters, which clogged the valves of the engine. But in that district they could make much cleaner gas than could be got in any other part of South Wales. At the works with which he was connected at Pontardawe they had a converted slag grinding plant driven by a steam engine using between 40 and 50 tons of coal per week. This steam engine was replaced by a Crossley gas engine. Anthracite was used costing about Ils. per ton, and only about seven tons per week was burned; and that plant was run day and night for six months on end without a stoppage. In late years they had been threatened by the Home Office with a regulation pro- hibiting the employment at night of boys under 18— this he believed was the proposal originally made. If these fads were carried out they would be unable to employ boys at all for a good many processes, with the result that they would not get properly-trained workmen later on. There were many expenses associated with the industry that were capable of considerable reduc- tions if only properly-trained gentlemen would give their minds to the problems furnished by tin-plate manufacture. Hitherto there had not been the same necessity for such investigation as now existed and as there would be in the future. Mr. J. R. Davies (Cwmfelin) agreed with Mr. Gilbertson that the tin-plate trade had been too conservative in the past, only recent years having seen any considerable development in methods, and this had been largely on the engineering side. The main principles of the manufacture were very largely what they were 50 years ago; and he did not think there would be much change in these principles until the chemist came more to the assistance of the trade than he had done in the past. Much, however, could be done on the mechanical side, but here they were handicapped by the disinclination of the workmen as a whole to co-operate. A larger number of men must be employed on the machinery in the mills; and to effect this and other improvements, it would be well for the Masters’ Association to do all in their power to bring the men’s leaders to a round-table conference in order to discuss this important aspect of the question. Their foreign competitors dealt with the question of output in a different way from that adopted in this country. They took a larger unit per piece. This opened up a rather difficult question with the steelmakers. It was a much more difficult thing to supply the tin-plate trade with matching bars than to supply it with the single-piece bars ; but, of course, it had a great bearing upon the question of the output. With regard to the consumption of tin per box of tin-plates, they would have to ask the steel- makers to help them in that direction. Mr. Spence Thomas raised the question of the comparative values of acid Bessemer steel, basic Bessemer steel, acid open- hearth steel and basic open-hearth steel. He thought it was the experience of manufacturers that each was good when made in the right way, and it was possible to make good or bad steel by each process. The discussion was continued by Mr. J. Hilditch, H.M. inspector of factories (Swansea), Mr. T. j Wakeham (London), Capt. T. O. Edwards, H.M. inspector of factories (Cardiff District), and Mr. Fred. W. Taylor (Briton Ferry). On the proposition of Mr. G. Rowe (Morriston), seconded by Mr. Henry Clement (Swansea), a cordial vote of thanks was extended to the author of the paper, the further discussion of which was fixed to take place at a special meeting of the institute to be held at Swansea. Institution of Mechanical Engineers.—An extra meeting will be held on Thursday, April 3, 1913, at 8 p.m., when the discussion will be resumed on the paper on “ Some Effects of Superheating and Feed-water Heating on Loco- motive Working,” by F. H. Trevithick and P. J. Cowan, member. Haulage in Mines .* Test Case for Fife Coal Company. —For the purpose of obtaining a judgment as to what mechanical haulage and gravitation haulage in a mine are to be regarded legally, a test case was heard in the Sheriff Court, Dunfermline, before Sheriff Umpherston. It is understood the case is being fought by the Scottish Coal- owners’ Association. The proceedings were taken part in by three Government officials, including Mr. Wm. Walker, H.M. divisional inspector of mines for Scotland. The respondents in the case were Charles Augustus Carlow colliery manager of the Fife Coal Company, Leven; Charles Carlow Reid, colliery manager, Cowdenbeath ; and Joseph Provan, colliery manager, Hill of Beath; and they were charged respectively as the general manager of the Fife Coal Company, the district agent, and the certificated manager, with having, on November 30, in No. 1 Dalbeath pit, permitted to be used on a haulage road in a mine between the Lochgelly splint seam and another seam on which road mechanical haulage (not being endless rope or endless chain haulage) was used, and the gradient exceeded 1 in 12, tubs to which, while ascending the road, there were not attached backstays or other suitable contrivances for preventing the tubs running away, contrary to the Coal Mines Regulation Act. The prosecution was conducted on behalf of the Crown by Mr. J. L. Wark, Advocate Depute . and Mr. R. C. Horne, K.C.; and the Hon. Wm. Watson, advocate, appeared for the respondents. The evidence turned latterly upon the interpretation of the statutes as to the working of wheel braes. The Sheriff, in delivering judgment, said that in order to obtain a conviction it must be proved that Mr. Carlow did take upon himself the duty which would naturally fall to any appointed agent in respect of the matters which were referred to in the complaint. As to the meaning of the words " agent ” and “ mechanical haulage,” he thought ithe real meaning intended by the statute as to the latter was haulage which was effected by any machinery worked by mechanical power, and the words had the same meaning as in the earlier sections. They meant some form of mechanism by which power was developed and transmitted, and that it was something different from the power of gravity, which was always referred to in the Act, not as a power at all, but simply as gravity. For this reason he thought that the defence to the complaint was justified, and that the sections founded upon did not apply to the breach to which the complaint referred. As to the interpretation of the word " agent,” it was proved jn the present case that Mr. Carlow was consulted, but it was not proved that he did decide whether the backstays were to be used in the pit, or that he imposed his desire upon any person. Therefore, he found Mr. Carlow not guilty. Mr. Reid also was found not guilty. In the case of Provan, the charge was deserted simpliciter, but the Sheriff assented to the request for stating a case. BOREHOLES AS A MEANS OF SAVING LIFE. [From a Correspondent.-! The time has arisen when all mining engineers will have to consider the ad visibility of retaining all bore- holes that are being or will be put down for prospecting and other purposes. Hitherto most boreholes have been lost through the mining companies or others not being prepared to purchase the contractor’s tubing put into the boreholes; the tubes have been withdrawn by the contractor on completion of boring operations, when the boreholes collapse and are lost; in many cases a probable valuable asset being thrown away for the paltry cost of the tubes, an item of, say, anything from £10 to £100 according to the diameter and depth of the borehole. A remarkable instance of a preserved borehole being the means of saving life has just been experienced at Egremont, Cumberland, where the Townhead Mining Company Limited had two men imprisoned in the workings of one of their mines through an inrush of water completely cutting off exit by the shaft. These two men knew of a borehole to the rise of the shaft; they made their way to it and soon got into communi- cation with the employers at the surface, who had also gone to the borehole, some 150 yards from the shaft The company’s officials were able to converse with the imprisoned men, and they immediately made arrange- ments to send down through the borehole Thermos flasks containing hot drinks, food, &c., to say nothing of other comforts in the shape of candles, a watch, and such woollen clothes and wraps as could be safely put down a borehole 5 in. in diameter. The borehole was also used for pumping air down to the men. The men were imprisoned 5| days before the shaft was unwatered and they could be brought to the surface and the borehole was the means of considerably allaying the fears of the management, to say nothing of the anxious relatives and friends of the entombed men. No doubt in future mining companies and others will seriously consider the desirability of preserving all boreholes, even if at the time of boring their use as a means of life-saving, &c., may appear remote. Cases have been known where boreholes only partially tubed have stood good for 20 years or more. Apart from being used as a means of saving life boreholes can be and are being used for water supplies and ventilating purposes ; and as holes can be bored of a diameter large enough for a man to be lowered up and down, mining companies may consider making such provision where a second exit by shaft or other means does not exist. A borehole of such large diameter might have other uses: it could be utilised for the lowering down of all timber required in the workings, a work of magnitude in some metalliferous mines which takes up much time at the drawing shaft—time which might be more profitably occupied in drawing metal. Such a borehole could also be used for conducting electric cables to the workings, thus removing the danger of having them in the shaft, with the possibility of reducing the length of cable required. The whole question bristles with opportunities, and will no doubt be seriously considered in the future. Scotch Railways Coal Consumption,—It is notjpossible this spring to make our customary comparison of the cost of the coal consumed in the locomotive departments of the five principal Scotch railways, as the returns which have been compiled relate to five months only. Coming events cast their shadows before, and the new system of railway book-keeping which has been introduced by Act of Parlia- ment is responsible for the change which has taken place. In 1914 we shall be able to go more fully into the matter, but the precise form which the comparison will assume cannot be stated at present. In the five months ending December 31 the locomotive coal consumed upon the Caledonian system cost £160,058 ; upon the Glasgow and South-Western, £67,640 ;upon the Great North of Scotland, £19,718 ; upon the Highland, £27,148 ; and upon the North British, £152,774, making an aggregate of £327,338. The distances run by trains upon the five systems were :— Caledonian, 7,146,846 miles ; Glasgow and South-Western, 3,306,223 miles ; Great North of Scotland, 939,795 miles ; Highland, 1,235,758 miles ; and North British, 8,020,378 miles—making an aggregate of 20,649,000 miles. The average cost of the coal consumed per train-mile run was, accordingly, 4’48d. There is one feature in connection with Scotch railway working to which we believe we previously called attention, and that is the little progress which electric traction has made upon Scotch railways. While English lines have been coming more and more under electric influences, Scotch railways appear to have experienced little change during the last 20 years in their daily working.