April 18, 1913. THE COLLIERY GUARDIAN. 819 One of the largest of the great scientific and industrial congresses is to be held in London in the early part of June 1915. This is the Sixth International Congress of Mining, Metallurgy, Applied Mechanics and Practical Geology. These congresses take place at intervals of five years, and the last, which was brilliantly successful, was held at Dusseldorf in 1910, previous congresses having been held in Paris and Liege. The attendance at the Dusseldorf congress was over 2,000, and it is anticipated that the attendance in London in 1915 will be equally large. An influential committee has been formed to make the necessary arrangements, and the movement is being actively supported by the University of London, Imperial College of Science and Technology, Geological Society of London, Institution of Mechanical Engineers, Iron and Steel Institute, Society of Chemical Industry, Institution of Mining Engineers, Institution of Mining and Metallurgy, Institute of Metals, South Wales Institute of Engineers, Cleveland Institution of Mining Engineers, West of Scotland Iron and Steel Institute, Staffordshire Iron and Steel Institute, Sheffield Society of Engineers and Metallurgists, and by numerous firms interested in the various industries represented. Messrs. Edward Bennis and Co. Limited, Little Hulton, Bolton, have received a repeat order from the Metropolitan Railway Company, for their power station, Neasden, to re-link 36 grates with their Bennis-Miller-Bennett link, including change-speed continuous driving gear. This contract follows on initial order for four sets, bringing the number supplied to this station to 40. The Bennis link, which is being substituted for those of another make hitherto in use, is specially adapted for slack coals and can now be applied to any existing chain grate frames. The link is particularly valuable where it is essential to burn slack or rough small as well as better-class coals, inasmuch as it is so constructed that it is not liable to burn off. Prof. Daniel Burns, of the Royal Technical College* Glasgow, has been invited by the University of Cardiff to deliver in the month of August of this year a series of 30 lectures under the auspices of the University at Cardiff and Penarth. The proposal is that 15 of the lectures should be delivered at Cardiff and the remainder at Penarth. In the lectures, Prof. Burns has been asked to deal with ventilation, the method of working and sinking, the support of roof and sides and electricity as applied to mining. Prof. Burns, who has been for 13 years principal of mining in the Royal Technical College, Glasgow, is a prominent member of the Mining Institute of Scotland. He is the author of many handbooks and treatises, and is popularly regarded as one of the foremost teachers of, and lecturers on, mining in the country. Mr. John Blake, who for many years has been a successful manager in the Hamilton district with Messrs. Watson and Co. has been appointed to the managerial oversight of a colliery in Girvan, Ayrshire. Mr. Blake did much satisfactory work as manager of Neilsland Colliery, Hamilton. The trustees of the late Capt. Stewart of William wood have entered into an arrangement with a syndicate for boring operations to be commenced on the estate with a view to finding out what coalseams are workable. It is expected that a pit will be sunk in this neighbourhood. Mr. A. Bell, of W orkington, under-manager of St. Helen’s Colliery, Siddick, has been appointed manager at Camerton Colliery. A conference was held last week at South Shields— attended by members of the South Shields Parliamentary Committee, the Washington District Council, the South Shields Rural District Council, the Chester-le-Street Rural District Council, and the local authority of Us worth and Boldon—to consider the question of providing these growing colliery districts with a direct railway service with South Shields. It was decided to wait upon the North- Eastern Railway Company, in the form of a deputation, to urge upon them to convert the mineral line into a passenger line as well. At the Woodlands model mining village last Sunday, in the new church, the Archbishop of York pointed out that the new church was given for the people, and that the stipends of the clergy were provided by the agency of the old mother church of which William Henry Pickering, the tried and proved friend of miners, was the first secretary. Preaching the same evening to a crowded congregation at the Doncaster parish church the Archbishop again made reference to Mr. Pickering, and to the South Yorks coalfield, and the housing conditions around Doncaster. He said he had often reminded the citizens of Doncaster that in this matter they were standing between a noble opportunity and a possible judgment and shame, because it rested with them of the present generation, whether or not these thousands, or hundreds of thousands of the working folk, would be housed in a manner adequate to the dignity of their human life. He rejoiced to hear beginnings were being made to catch some vision of this great opportunity, to have some sense of this inspiring responsibility. He could not but remember as he stood there that the last occasion he was in that church was to pay his tribute of respect to one whom he trusted they would shortly memorialise upon the walls of that church which he loved, Mr. William Henry Pickering, who believed in the inherent nobility of the miner. fall. The presumption was that the whole of the ponies might have been in contact with the one affected, and the Board of Agriculture and Fisheries thought that the remainder of the ponies in the pit, about 30, should also be tested. The local authority decided not to deal meantime with the seven animals that had re-acted, and that the veterinary inspector should test the remainder of the animals in the other portions of the workings, the colliery company to be asked to bring them to a suitable place for the purpose. At Stoke County Court last week a fireman was fined £5 and costs for failing to inspect a portion of the Florence colliery before the day shift, a similar penalty being inflicted upon a hooker-on for failing to see that a fence to an inset at the same pit was securely set up, and for leaving tubs unlocked on the wagonway. A pit wagoner was fined £2 and costs for starting tubs unattended and uncontrolled down an incline, as was a miner for going into workings other than those to which he was directed. The workmen employed at the Burradon and Weetslade “ Lizzie Pits,” owned by the Burradon and Coxlodge Coal Company, have presented Mr. George Bell, the under- manager at the colliery with a handsome marble timepiece as a token of appreciation of services rendered in coaching the men for examination to obtain efficiency under the New Mines Act. Mrs. Bell was presented with a gold broach. Mr. Frederick Nettlefold, formerly chairman of Messrs. ' Nettlefold and Co., screw manufacturers, of Birmingham and London, left estate valued at .£343,009 gross, with net personalty of .£299,188. At a meeting of the Glasgow Chamber of Commerce, Mr. Thomas Henderson, the president, intimated that the British Chamber in Egypt had received a letter from the general manager of the Egyptian State Railways, in response to the suggestion conveyed to him to encourage the use of Scottish coal instead of American coal on the railways, agreeing to give Scottish coal a trial when next he receives tenders. It was agreed to convey to the British Chamber the thanks of the Glasgow Chamber for their good offices. The Jubilee pit of the Sand well Park Colliery Company at West Bromwich, has been brought to a standstill by an inrush of water. The consideration of a Bill brought forward by the Corporation of Chesterfield, which has for its object the promotion and maintenance of a system of railless tram and motor omnibuses between the borough of Chesterfield and outlying villages, occupied the attention of a Select Committee of the House of Commons this week. It was explained that Chesterfield had a population of about 38,000, and was surrounded by an important colliery district. Within a radius of from two to four miles of the town there were large villages, numbering from 3,000 to 8,000 inhabitants, and even larger, for which Chesterfield was the educational and business centre. The Corporation desired to run first a motor bus service to work up and develop the route before incurring capital expenditure in putting up the posts, &c., for the trackless trolleys. When the time was ripe, the motor buses would be withdrawn and the trackless trolleys substituted. At a meeting of the local section of the Society of . Chemical Industry on the 14th inst., at Leeds, a paper was read by Mr. W. McD. Mackey on the “ Rapid Method of Testing Suction Gas Fuels for Liability to Clog Gas Engine Valves.” Mr. Charles B. Balfour of Balgonie, Markinch, and Newton Don, Kelso, a prominent Fife coalmaster, and Lady Nina Balfour, his wife, celebrated their silver wedding on Saturday, when the employees of Balgonie Colliery were entertained in the village of Coaltown of Balgonie in honour of the occasion. Among the gifts received by Mr. Balfour is a beautiful silver table centre from the managing officials of the colliery. A presentation is also to be made shortly by the workers in the pits. Mr. Sydney F. Walker addressed a meeting of the western section of the Institution of Electrical Engineers at Cardiff on Monday, his remarks being supplementary to a paper which he had prepared on the subject of “ The use of High Tension Continuous Current on the Thury System in Mines.” Mr. Walker, in his paper, stated that the system which he had taken as the subject of his lecture practically threatened a revolution in the method of using electricity in mines. As an instance of the importance of the new departure, Mr. Walker said that a suggestion which occurred in the paper would render the working of electrically driven coal-cutting machines absolutely safe so far as shock was concerned. By the method he was pro- posing, the current working the coal-cutting machines need not exceed 100 volts continuous (instead of 500 volts as now), or it might be even 50 volts continuous, which, as they were aware, was perfectly safe. A correspondent understands that amongst other impor- tant developments to be carried out in connection with Lord Ellesmere’s extensive Mosley Common Collieries, Tyldesley, is the proposed sinking to the Arley measures at the No. 2 Pit. The railway connecting his lordship’s Linnyshaw Collieries, Walkden, with Clifton, where new wharves are to be established, has now been practically completed. CATALOGUES AND PRICE LISTS RECEIVED, A leaflet received from H. Miller Limited (Hazebrouck, France), illustrates various types of portable voltmeters and ammeters. The Chicago Pneumatic Tool Co. issue catalogue information in regard to the Duntley electric portable railway and tramway tools, electric signal bonding outfits, and the triple ignition Rockford motor car for track service. Messrs. Siemens Bros. Dynamo Works Limited (38 & 39, Upper Thames-street, E.C.), send us new price lists of house service fuses and “ Melda ” house water pumps. The latter are designed for use with small or large elevated cistern or switch air vessel. The pump will suck although the suction pipe is empty, and the volume delivered is independent of the head, depending upon the speed only. We have received from the Wilfley Mining Machinery Company Limited (Salisbury House, E.C.) a catalogue descriptive of an improved grinding device, the Hardinge conical ball and pebble mills. There are three types of these mills, for grinding to different sizes, and in each machine the crushing bodies arrange themselves with the largest and heaviest at the greatest diameter, with corre- sponding graduations to the least diameter, the mill being conical or shaped somewhat like a peg-top laid on its side. The material undergoing division automatically travels forward at each reduction as though actuated by an archi- median screw, up and out of the cone. One of the Hardinge mills has been installed at the company’s testing plant, 94, Belvedere-road, S.E., where those interested may have trial runs made on their own ore. A handsome catalogue of tool steel has just been issued by Messrs. Cammell, Laird and Co. (Cyclops Steel and Iron Works, Sheffield), in which particulars are given of a large variety of high-class crucible and cast steels for different purposes. Mining tool steels are represented by the following labels:—The best refined cast steel for boring hard rock, refined cast steel and warranted cast steel for miners’ drills, manufactured from the finest brands of Swedish bar steel; the “Fortuna” brand of special mining steel, made in various tempers to suit different classes of rock; hollow drill steel, made in round, octagon, and hexagon sizes; the “ Espero ” brand of special mining steel; the “ Camel ” brand, a cheap reliable drill steel; and Cammell’s special steel for coal - cutting machines (“Colpik” brand). In the case of the “Fortuna” and “Colpik” brands, no tempering is required. A useful feature of the catalogue is the printing of definite instruc- tions in the case of each brand, as to forging, hardening and annealing; makers have frequently been unfairly blamed for the shortcomings of their customers, and it is a wise precaution to discount this possibility in the manner stated. The catalogue also contains a useful list of weights, equations, gauges, &c., in addition to many applications of high-grade steel to which we are debarred by lack of space from referring. Pamphlet No. 16 B, issued by Messrs. Bruce Peebles and Co. Limited (Edinburgh), deals with self-contained poly- phase induction motors, a type of machine that is obtaining an increasing vogue in collieries. Specifications are given of no less than eight different types of standard machine, which probably cover all ordinary requirements. Amongst these we notice motors of the protected, semi-enclosed, totally-enclosed and pipe-ventilated types, whilst in Type F we have a mine motor, both flame-proof and watertight, the end covers and inspection doors having specially wide mechanical faces. The automatic centrifugal starter motors (type G) have a special rotor winding and an automatic centrifugal short-circuiting arrangement. This arrange- ment is “ open ” when the rotor commences to revolve, but automatically closes when a predetermined speed is reached. Attention may also be directed to type H (two-speed motors). Full lists of approximate weights and dimensions of every size manufactured are given, while full lists of technical data for 50- and 25-cycle motors are also included, machines being dealt with for three separate ranges of voltages from 110 up to 3,500 volts, at speeds of from 1,500 down to 150 revolutions per minute. Wireless Telephony in Mines.—Great interest is being aroused in colliery circles in South Yorkshire at a series of experiments in wireless telephony which are being carried out at the Dinnington Main Colliery, and which it is hoped will lead to easier and safer communication in various parts of the mine. The inventor is a German scientist, and a German syndicate is installing the necessary apparatus at the mine. If the system is capable of all that the inventor claims for it, the results will be far-reaching, as it is stated a conversation can be carried on through 1,500 yards of solid rock. Reticence is being observed concerning the matter. A Press representative who saw the chief engineer (Mr. W. D. Wallis) was informed it was quite true that tests are being made, but whether the system would enable one to communicate through 1,500 yards of solid rock or not he was unable to say. When the experiments had reached a more advanced stage, details would, he said, be available.