October 15, 1915. THE COLLIERY GUARDIAN. 787 MINING INSTITUTE OF SCOTLAND. A general meeting of the Mining Institute of Scotland was held on Saturday in the Heriot-Watt College, Edinburgh, Mr. D. M. Mowat, president, in the chair. The following gentlemen were admitted to membership :— Messrs. Robt. H. Dundas, Indian Collieries Syndicate Limited, Jamadoba, India; James Mason, colliery manager, Jealgora Collieries, Jamadoba, India; David Todd, colliery manager, Auchlochan Collieries, Coalburn, Lanarkshire; and John Samson, coal master, Burnfoot, Sanquhar. Resident versus Non-Resident Brigades. Discussion was resumed on the paper previously read by Mr. Henry Briggs, mining lecturer, Heriot-Watt College, Edinburgh, on “ The Resident Brigade System versus the System of Non-Resident Brigades.” Mr. James Hamilton, Glasgow, said he thought the author had stated his case from his point of view in an excellent way. Certainly he had been able to pick out a good many joints in the armour of the new system. Theoretic- ally, it was his (Mr. Hamilton’s) opinion that there was not much doubt that the newer system • was the better. He thought the men of the brigades under the new system ought to be trained so as to be able to find their W’ay in a mine from a reading of plans at sight. In his view, it would be a most useful exercise for the members of a team that they should be given the plans of the workings of a colliery, and asked to find their way about these to a certain point with- out any assistance. Of course, it would be necessary to secure that the members of a brigade did not wander off the proper road in a colliery and get into danger in consequence. Mr. G. L. Kerr, Glasgow, remarked that there were one or two phrases in the paper which were not quite clear to him, and he would be glad if Mr. Briggs could elucidate these points. For example, he did not know what was meant in the following statement : “ The most obvious drawback in the new system is that a resident brigade cannot hope to equal a local brigade in knowledge of the workings.” What workings did the author refer to there? Did he mean the workings that each brigade w^as acquainted with, or did he refer to the workings that brigades might be called to at other collieries. With regard to the type of man who could be employed, Mr. Briggs made a point that under the resi- dent system any individual, whether he had any experience of mining or not, could be engaged. He thought, as a parallel instance, he might remark that if a colliery manager or owner desired to employ a fireman or oversman, he would take good care to ensure that he knew something about underground workings. In the same way he did not think anyone would employ a man as a member of a rescue team unless he knew something about mining. Personally, he thought it was rather a pity that Mr. Briggs had not given them some details as to the cost of the old system. Mr. Robert McLaren, H.M. inspector of mines, said he was disposed to agree with Mr. Kerr that a sufficient time had not elapsed to afford them a fair idea as to whether the new system was better than the old. He took strong excep- tion to the remark made in the paper by Mr. Briggs that it was possible for others than miners to become members of a permanent brigade. He could scarcely think any manager would be so foolish as to employ as a member of a rescue brigade one who had no knowledge of mining or mining operations. The President said he believed that Mr. J. T. Forgie had, at the last meeting of the institute, covered all the points he could have urged in defence of the new system. There was a good deal to be said for each system under certain special circumstances. With regard to the point that had been raised about an ability to read plans, he might say that they intended in the Lanarkshire area, once the brigades were all trained, to adopt some course of training on these lines. Brigades would be taken out to a colliery and would be asked to find their way about the workings from the colliery plan which would be handed to them. The resident brigade system had the advantage that the members of the team were constantly under the eye of the instructor—they were, in point of fact, his pupils. A record was kept of each individual’s work, of his behaviour under training, and the instructor was thereby able to know in what respect this man was reliable, or unreliable, as the case might be. The com- mitfee of the Lanarkshire Coal Masters’ Association appointed to enquire into this question approached the whole subject with absolutely open minds. They visited many dis- tricts, and they saw both systems. The system which the committee had originally in view was, in his opinion, better than the other two, but unfortunately they had not been per- mitted to carry it into operation. Their intention was at first that the rescue station at Coatbridge should be the only station for the whole of the Lanarkshire area. Their proposal was, further, to have a sufficient number of men under train- ing during a series of three eight-hour shifts in the course of the 24 hours as would have ensured that, no matter when a call might come, thoroughly fresh and completely equipped rescuers would be at hand. He was disposed to admit that in the Lothians possibly the better system had been selected for that district. He held a similar view in regard to the scheme chosen in Lanarkshire, from which it would be deduced that, in his view, he recognised that there was room for both systems Much depended on the local circum- stances and conditions. Mr. Henry Briggs, in replying to the discussion, said it was necessary again to point out that the only test of efficiency which was of value was that made in face of actual condi- tions underground. A resident team might be able to show special dexterity with apparatus in its own gallery, but all that was merely ornamental unless it could beat the local team on its own ground, namely, in the pit. Only one critic (Mr. J. T. Forgie) attempted to meet his contention that, after having once been trained, the method most likely to maintain efficiency was that which best ensured physical fitness. Mr. Forgie’s view was that the practice a resident brigade got in the gallery was as well able to maintain physical condition as work underground. It was to be regretted that, in support of this contention, Mr. Forgie did not give a time-table showing exactly how the average day of a member of the resident brigade was filled up. In default of such a table he (Mr. Briggs) might be 'allowed to express doubt whether two hours in a gallery was the equivalent of eight hours in the pit. It was sufficient to indicate that the case for the new system rested on doubtful premises, and to add that while the other system had proved efficient in prac- tice, the new arrangement had not yet done so. Coming now to another argument, that wdaile the brigades of the original system must be made up from miners, the regulations applying to the resident brigade system allowed others to join these brigades. The weakness here did not need enlarging upon in his opinion. The supporters of the new system could not be brought to fight at close quarters on this.point. They all avoided the question with the exception of Mr. Forgie, and he neatly evaded the general issue by talking of the good inten- tions of the Lanarkshire committee, which no one who had seen the splendid station at Coatbridge could for a moment doubt. He believed, however, that if a census were to be taken of the members of resident brigades throughout Britain it would be found that the majority of them had not been drawn from the mining community. On the other hand, the resident brigades were recruited—as Mr. Steele, H.M. inspector of mines, had pointed out—from the best men at the collieries. One other point in favour of the older system had also been inadequately answered. It was to the effect that a resident brigade could not hope to know the workings of a mine as well as a colliery brigade. Mr. McLuckie pro- posed that the resident brigade should pay visits to the mines to become acquainted with them, and especially to mines where there existed danger of spontaneous combustion or explosion. The suggestion was a valuable one, but such occa- sional visits could not hope to make the corps as familiar with all parts of the workings as was the colliery brigade. If those of the “ new ” persuasion would fairly face this question, they would, he believed, find they were led into a dilemma, out of which the only escape was to admit their system faulty in one very important respect. On the question of reserves, the Lanarkshire scheme, with its numerous affiliated stations, ensures that, in the event of a disaster involving the continuous service of trained men during several days, a sufficiency of reserves would be available. At the same time, it seemed to him that the matter should be argued from the general standpoint, and not merely from that of one favoured district. Being merely a matter of arithmetic, it was impossible to deny that the original system in all cases provided with greater reserves. In the final matter—that of cost—the advantage appeared to be 'admitted by all parties to lie on the side of the old system. Mr. James Roberts advo- cated the station brigade system “ in those districts where a limited number of men were employed.” Unhappily, this was just the case where that system was most expensive and least justifiable. During the course of the discussion an advantage was claimed for the new system which was not mentioned in the paper, namely, that it relieved the colliery manager of trouble and responsibility. He thought it could be admitted that it slightly reduced his trouble if he was within the 10 miles radius. It was easier to arrange for, say, three men to absent themselves and go to the station for training than for 10 or 15. It was also true that the wastage of the smaller number was likely to be less than that of the larger. Personally, he was glad that this point had been raised, because it seemed to him that it was the only advan- tage which the new system could claim with any degree of certitude. The discussion was closed, and the author thanked. Attachment to Self-Contained Rescue Apparatus. The discussion was thereafter continued on the paper by Mr. Michael McCormick, instructor at the Heriot-Watt Rescue Station, Edinburgh, on “An Auxiliary and Outfit for Attachment to Self-contained Rescue Apparatus.” Mr. Joseph Parker, B.Sc., Cowdenbeath, in the course of. a communicated contribution, said within the limits imposed by the supply of oxygen and the exhaustion of the purifier, occasions undoubtedly would arise in practice where it would be most desirable that either a person to be rescued, or a member of the rescue brigade whose own apparatus might have failed, should be able to breathe in parallel with another from an apparatus in good order. That, how- ever, two persons could in an emergency save themselves on a supply of only two litres of oxygen per minute was an open question. In such an emergency neither party was likely to preserve that calm which was necessary to get on with a low consumption of oxygen; and in any case that state of mind would be much more likely to be attained if the supply could be increased for a little when the need for more oxygen was felt. A point that directly applied to Mr. McCormick’s device was that of two men breathing a common and very limited atmosphere. Could the purifier be relied upon to kill all the germs in the air which passed through it? Unless a temperature of about 180degs. Fahr, was reached, heat alone cannot be relied upon to destroy the germs. Probably, however, the destructive action of the caustic alkali would ensure the destruction of all germs, and some of the members might be able to speak with authority on this matter. * Subject to a reply from the author, who was not present, the discussion was closed. Lining Shafts with Concrete Z-Blocks. The discussion on Mr. Marcel Gillieaux’s paper was adjourned till next meeting. The Education and Training of the Mining Engineer. The President said that arising out of the discussion on Mr. R. W. Dron’s paper, Mr. Henry Briggs had been in communication with the Board of Mining Examinations on a point of some difficulty, and had now received an interesting reply. Mr. Briggs explained that the rules for the conduct of mining examinations stated that in the case of mining apprentices the greater portion of the practical experience, that was of the five years or seven years, as the case might be, must be gained either in actual practical work at the colliery face and other parts of underground work, or in direct supervision of such work, or in a mixture of the two. The difficulty had been, and it had existed ever since these rules were promulgated, to know the exact period covered by the words “ the greater portion of the practical experi- ence.” It was a matter which concerned apprentices to mining engineers, and the subject was taken up a year or two ago by a number of mining engineers in Glasgow and Edinburgh. One would imagine from the plain English of the statement—but, of course, they could not accept that sort of reading for a Home Office dictum—that “ the, greater portion of the practical experience ” out of five years would mean something greater than 2| years. That was now the exact reading of the phrase, wThich was given by the Examining Board itself in reply to a letter which he (Mr. Briggs) addressed to them on the subject. The letter made matters a little more clear in this respect, that they could now say to mining apprentices : ‘‘If you become an apprentice you can gain your certificate after five years’ experience. Of these five years you can take 21 years plus a day in actual underground work or in supervision. The remainder of the time up to the end of five years can be spent in mine surveying.” The President remarked that they were greatly indebted to Mr. Briggs for having obtained this particular interpreta- tion, and its value was enhanced since it was official, having been signed by Mr. W. W. Ware, the secretary to the Board for Mining Examinations. MANCHESTER GEOLOGICAL AND MINING SOCIETY. ANNUAL MEETING. The annual meeting of the Manchester Geological and Mining Society was held on Tuesday last, the President, Mr. Leonard R. Fletcher, being in the chair. In the course of their 77th annual report, the council expressed their pleasure at being able to record another successful year, 26 new members having been elected, of which 21 were federated members, three federated associate members, and two federated associates. The withdrawals by resignation numbered 13, made up of 10 federated members, one federated associate, one student, and one non- federated member. In addition there are seven now federated members of various grades in process of election. The council had to record with regret the deaths, during the year, of six federated members, namely, Mr. Robert Cartwright (elected 1908), Mr. Henry Cowburn (elected 1878), Col. George H. Hollingworth (elected 1878), Mr. W. Oswald Kellett (elected 1908), Mr. Gregory Raby (elected 1907), Mr. Henry Wall (elected 1882). The council had also to mourn the loss of several members of the society who have been killed in action during the present war. About 40 members are serving at home or at the front, and the following have been killed in action :—Capt. H. Hargreaves Bolton, Lieut. George Sydney James, Sapper William H. Murray, Capt. Hugh Brocklehurst Pilkington, Capt. Henry Milward Rogers, and Major Augustus Henry Wheeler. The report and balance sheet were adopted. New Members. The folio wing new members were elected :—Members - Federated : Mr. William Haslam Cross, 77, King-street, Manchester; Mr. Evan Davies, 8, New Houses, Trimsaran, Kidwelly, South Wales; Mr. James Jackson, 4, Brackley Villas, Little Hulton, Bolton; Mr. William Morris, 77, King-street, Manchester; Mr. George H. Royston Webster, ‘‘ Clarach,” Rainhill, Lancashire. Associate members— Federated : Mr. Alexander H. Low, 9, Holland Park, London, W. ; Mr. Edward W. Teale, “ Brandside,” Bowden-road, Swinton. Election of Officers. Sir Thomas H. Holland moved that Mr. Leonard R. Fletcher be invited to occupy the position of president for another year. Mr. Gerrard (ex-H.M. inspector of mines), in seconding the proposal, remarked that Mr. Fletcher had not missed a single meeting during his tenure of office, either of the council or the general body of members. The resolution was carried with acclamation. The President thanked the members for the confidence they had shown in him by asking him to act as their president for another year. The following officers were also appointed :—Vice-presi- dents : Messrs. C. F. Bouchier, A. J. A. Orchard, W. Pickup, and T. H. Wordsworth. Council : Messrs. W. T. Anderson, H. S. Atherton, V. Bramall, A. M. Lamb, W. Ollerenshaw, J. D. Paton, F. A. Ross, W. Bolton Shaw, Sydney A. Smith, T. Stone, Charles Turner, and Percy Lee Wood. Hon. treasurer : Mr. John Ashworth. Hon. secretary : Mr. Noah T. Williams. Hon. auditors : Messrs. H. S. Atherton and V. Bramall. Professional accountants : Messrs. Jones, Crewdson and Youatt. Presidential Address. The President, in the course of his presidential address, said, in choosing a subject, he had decided to touch upon the matter that was occupying our time and our thoughts, to the exclusion of almost everything else, and to consider the war as it influenced the coal mining industry, and, as a corollary to that, the coal mining industry and its influence on the war. Dealing with -recruiting among miners, he said, at the lowest computation, it was certain that there was a reduction of 20 per cent, in the number of mine workers due to the war, and it was necessary to estimate the probable effect on the output of coal produced by that exodus. It would seem that the export trade would readjust itself without much benefit to the home market, and, that being so, they must face the certainty that, with an equal demand during this year, the output of coal would be reduced by -at least 36 million tons, and that next year that deficit would be even greater, unless remedial steps could be taken. It was, of course, a truism to say that there were two courses open :— (1) To reduce the demand; and (2) to increase the supply. The demands of the Navy and our Allies were likely to swallow up most of the coal which was formerly exported to Germany and Austria. Surely that w’as worth every effort and sacrifice on the part of every class of colliery worker. And what of the home demand for manufacturing coal? Was there a less demand from that quarter? Apparently not, for whatever might have been the case in the early days of the war, there was very little short time now, owing to the demands of the Government for all kinds of war munitions, and to the wonderful work of our incomparable Navy. Where then could we look for a reduction in demand? Only, it would seem, from the private consumer; and it was not. usual for a colliery owner to plead for that. Nevertheless, the acting-president of the Coal Owners’ Association made such an appeal at the great colliery conference in London in July last, and he (the president) took that opportunity of endorsing that appeal. It ought to be possible for much coal to be saved by the householder, especially by the larger house- holder, by sensible economy in fires, and by the adoption of modern economical grates. So much for the demand. Now what means could be taken for maintaining or increasing the supply? That was a difficult matter to adjust, as the supply of coal depended so indirectly on the supply of men. Unless the Government forbade the further enlistment of colliers it would seem a matter of impossibility to maintain the output of coal even at its present reduced figure. Every coal face worker got at least 10 tons of coal a week if he worked full time under present conditions, so every collier who enlisted represented a loss in output of about 500 tons per annum. If it was desired to maintain the supply of coal with a diminished number of men, it was obviously necessary for those who remained behind to make up for those who were away. That could only be done by increasing the number of hours worked per day or the number of days worked per week, for in the coal trade most of the coal was got by piece work, and there were no trade union rules restricting the output. Whether any advantage could be obtained by the suspension of the Act was an arguable point, to which he would now turn. By rule of three, if an eight hours day produced 250 million